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193 vulnerabilities found for envoy by envoyproxy
VAR-202310-0175
Vulnerability from variot - Updated: 2026-04-10 22:02The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512
Debian Security Advisory DSA-5540-1 security@debian.org https://www.debian.org/security/ Markus Koschany October 30, 2023 https://www.debian.org/security/faq
Package : jetty9 CVE ID : CVE-2023-36478 CVE-2023-44487
Two remotely exploitable security vulnerabilities were discovered in Jetty 9, a Java based web server and servlet engine. The HTTP/2 protocol implementation did not sufficiently verify if HPACK header values exceed their size limit. This problem is also known as Rapid Reset Attack.
For the oldstable distribution (bullseye), these problems have been fixed in version 9.4.50-4+deb11u1.
For the stable distribution (bookworm), these problems have been fixed in version 9.4.50-4+deb12u2.
We recommend that you upgrade your jetty9 packages.
For the detailed security status of jetty9 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/jetty9
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE-----
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Description:
Red Hat AMQ Streams, based on the Apache Kafka project, offers a distributed backbone that allows microservices and other applications to share data with extremely high throughput and extremely low latency. This could result in denial of service.
Description:
nghttp2 contains the Hypertext Transfer Protocol version 2 (HTTP/2) client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C.
Description:
Node.js is a software development platform for building fast and scalable network applications in the JavaScript programming language.
Description:
.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.
New versions of .NET that address a security vulnerability are now available. The updated versions are .NET 6.0 to SDK 6.0.123 and Runtime 6.0.23.
The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7481.json
Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.
- Packet Storm Staff
==================================================================== Red Hat Security Advisory
Synopsis: Important: OpenShift Container Platform 4.11.54 packages and security update Advisory ID: RHSA-2023:7481-01 Product: Red Hat OpenShift Enterprise Advisory URL: https://access.redhat.com/errata/RHSA-2023:7481 Issue date: 2023-11-29 Revision: 01 CVE Names: CVE-2023-44487 ====================================================================
Summary:
Red Hat OpenShift Container Platform release 4.11.54 is now available with updates to packages and images that fix several bugs and add enhancements.
This release includes a security update for Red Hat OpenShift Container Platform 4.11.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description:
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.
This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.11.54. See the following advisory for the container images for this release:
https://access.redhat.com/errata/RHSA-2023:7479
Security Fix(es):
- HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack) (CVE-2023-44487)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
All OpenShift Container Platform 4.11 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.11/updating/updating-cluster-cli.html
Solution:
https://docs.openshift.com/container-platform/4.11/release_notes/ocp-4-11-release-notes.html
CVEs:
CVE-2023-44487
References:
https://access.redhat.com/security/updates/classification/#important https://bugzilla.redhat.com/show_bug.cgi?id=2242803
. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 202408-10
https://security.gentoo.org/
Severity: Normal Title: nghttp2: Multiple Vulnerabilities Date: August 07, 2024 Bugs: #915554, #928541 ID: 202408-10
Synopsis
Multiple vulnerabilities have been discovered in nghttp2, the worst of which could lead to a denial of service.
Background
Nghttp2 is an implementation of HTTP/2 and its header compression algorithm HPACK in C.
Affected packages
Package Vulnerable Unaffected
net-libs/nghttp2 < 1.61.0 >= 1.61.0
Description
Multiple vulnerabilities have been discovered in nghttp2. Please review the CVE identifiers referenced below for details.
Impact
Please review the referenced CVE identifiers for details.
Workaround
There is no known workaround at this time.
Resolution
All nghttp2 users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=net-libs/nghttp2-1.61.0"
References
[ 1 ] CVE-2023-44487 https://nvd.nist.gov/vuln/detail/CVE-2023-44487 [ 2 ] CVE-2024-28182 https://nvd.nist.gov/vuln/detail/CVE-2024-28182
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
https://security.gentoo.org/glsa/202408-10
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2024 Gentoo Foundation, Inc; referenced text belongs to its owner(s).
The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5
Show details on source website{
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"data": "The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA512\n\n- -------------------------------------------------------------------------\nDebian Security Advisory DSA-5540-1 security@debian.org\nhttps://www.debian.org/security/ Markus Koschany\nOctober 30, 2023 https://www.debian.org/security/faq\n- -------------------------------------------------------------------------\n\nPackage : jetty9\nCVE ID : CVE-2023-36478 CVE-2023-44487\n\nTwo remotely exploitable security vulnerabilities were discovered in Jetty 9, a\nJava based web server and servlet engine. The HTTP/2 protocol implementation\ndid not sufficiently verify if HPACK header values exceed their size limit. This\nproblem is also known as Rapid Reset Attack. \n\nFor the oldstable distribution (bullseye), these problems have been fixed\nin version 9.4.50-4+deb11u1. \n\nFor the stable distribution (bookworm), these problems have been fixed in\nversion 9.4.50-4+deb12u2. \n\nWe recommend that you upgrade your jetty9 packages. \n\nFor the detailed security status of jetty9 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/jetty9\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n-----BEGIN PGP SIGNATURE-----\n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\nE8ThC0Q+lbZ4nth0vw2R93ObMfzlxZN2YJUqKf3aw/yAKd8YIys=CO/+\n-----END PGP SIGNATURE-----\n. \n\n\n\n\nDescription:\n\nRed Hat AMQ Streams, based on the Apache Kafka project, offers a distributed backbone that allows microservices and other applications to share data with extremely high throughput and extremely low latency. This could result\nin denial of service. \n\n\n\n\nDescription:\n\nnghttp2 contains the Hypertext Transfer Protocol version 2 (HTTP/2) client, server, and proxy programs as well as a library implementing the HTTP/2 protocol in C. \n\n\n\n\nDescription:\n\nNode.js is a software development platform for building fast and scalable network applications in the JavaScript programming language. \n\n\n\n\nDescription:\n\n.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. \n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET 6.0 to SDK 6.0.123 and Runtime 6.0.23. \n\nThe following advisory data is extracted from:\n\nhttps://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7481.json\n\nRed Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat\u0027s archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment. \n\n- Packet Storm Staff\n\n\n\n\n====================================================================\nRed Hat Security Advisory\n\nSynopsis: Important: OpenShift Container Platform 4.11.54 packages and security update\nAdvisory ID: RHSA-2023:7481-01\nProduct: Red Hat OpenShift Enterprise\nAdvisory URL: https://access.redhat.com/errata/RHSA-2023:7481\nIssue date: 2023-11-29\nRevision: 01\nCVE Names: CVE-2023-44487\n====================================================================\n\nSummary: \n\nRed Hat OpenShift Container Platform release 4.11.54 is now available with updates to packages and images that fix several bugs and add enhancements. \n\nThis release includes a security update for Red Hat OpenShift Container Platform 4.11. \n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. \n\n\n\n\nDescription:\n\nRed Hat OpenShift Container Platform is Red Hat\u0027s cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. \n\nThis advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.11.54. See the following advisory for the container images for this release:\n\nhttps://access.redhat.com/errata/RHSA-2023:7479\n\nSecurity Fix(es):\n\n* HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS\nattack (Rapid Reset Attack) (CVE-2023-44487)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. \n\nAll OpenShift Container Platform 4.11 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.11/updating/updating-cluster-cli.html\n\n\nSolution:\n\nhttps://docs.openshift.com/container-platform/4.11/release_notes/ocp-4-11-release-notes.html\n\n\n\nCVEs:\n\nCVE-2023-44487\n\nReferences:\n\nhttps://access.redhat.com/security/updates/classification/#important\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2242803\n\n. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\nGentoo Linux Security Advisory GLSA 202408-10\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n https://security.gentoo.org/\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\n Severity: Normal\n Title: nghttp2: Multiple Vulnerabilities\n Date: August 07, 2024\n Bugs: #915554, #928541\n ID: 202408-10\n\n- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -\n\nSynopsis\n========\n\nMultiple vulnerabilities have been discovered in nghttp2, the worst of\nwhich could lead to a denial of service. \n\nBackground\n==========\n\nNghttp2 is an implementation of HTTP/2 and its header compression\nalgorithm HPACK in C. \n\nAffected packages\n=================\n\nPackage Vulnerable Unaffected\n---------------- ------------ ------------\nnet-libs/nghttp2 \u003c 1.61.0 \u003e= 1.61.0\n\nDescription\n===========\n\nMultiple vulnerabilities have been discovered in nghttp2. Please review\nthe CVE identifiers referenced below for details. \n\nImpact\n======\n\nPlease review the referenced CVE identifiers for details. \n\nWorkaround\n==========\n\nThere is no known workaround at this time. \n\nResolution\n==========\n\nAll nghttp2 users should upgrade to the latest version:\n\n # emerge --sync\n # emerge --ask --oneshot --verbose \"\u003e=net-libs/nghttp2-1.61.0\"\n\nReferences\n==========\n\n[ 1 ] CVE-2023-44487\n https://nvd.nist.gov/vuln/detail/CVE-2023-44487\n[ 2 ] CVE-2024-28182\n https://nvd.nist.gov/vuln/detail/CVE-2024-28182\n\nAvailability\n============\n\nThis GLSA and any updates to it are available for viewing at\nthe Gentoo Security Website:\n\n https://security.gentoo.org/glsa/202408-10\n\nConcerns?\n=========\n\nSecurity is a primary focus of Gentoo Linux and ensuring the\nconfidentiality and security of our users\u0027 machines is of utmost\nimportance to us. Any security concerns should be addressed to\nsecurity@gentoo.org or alternatively, you may file a bug at\nhttps://bugs.gentoo.org. \n\nLicense\n=======\n\nCopyright 2024 Gentoo Foundation, Inc; referenced text\nbelongs to its owner(s). \n\nThe contents of this document are licensed under the\nCreative Commons - Attribution / Share Alike license. \n\nhttps://creativecommons.org/licenses/by-sa/2.5\n",
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CVE-2026-26330 (GCVE-0-2026-26330)
Vulnerability from nvd – Published: 2026-03-10 19:19 – Updated: 2026-03-10 20:17
VLAI?
Title
Envoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directly
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, At the rate limit filter, if the response phase limit with apply_on_stream_done in the rate limit configuration is enabled and the response phase limit request fails directly, it may crash Envoy. When both the request phase limit and response phase limit are enabled, the safe gRPC client instance will be re-used for both the request phase request and response phase request. But after the request phase request is done, the inner state of the request phase limit request in gRPC client is not cleaned up. When a second limit request is sent at response phase, and the second limit request fails directly, the previous request's inner state may be accessed and result in crash. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.3 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26311 (GCVE-0-2026-26311)
Vulnerability from nvd – Published: 2026-03-10 19:14 – Updated: 2026-03-10 19:34
VLAI?
Title
Envoy HTTP: filter chain execution on reset streams causing UAF crash
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager (FilterManager) that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" (UAF) or state-corruption window where filter callbacks are invoked on an HTTP stream that has already been logically reset and cleaned up. The vulnerability resides in source/common/http/filter_manager.cc within the FilterManager::decodeData method. The ActiveStream object remains valid in memory during the deferred deletion window. If a DATA frame arrives on this stream immediately after the reset (e.g., in the same packet processing cycle), the HTTP/2 codec invokes ActiveStream::decodeData, which cascades to FilterManager::decodeData. FilterManager::decodeData fails to check the saw_downstream_reset_ flag. It iterates over the decoder_filters_ list and invokes decodeData() on filters that have already received onDestroy(). This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.9 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26310 (GCVE-0-2026-26310)
Vulnerability from nvd – Published: 2026-03-10 19:08 – Updated: 2026-03-10 20:12
VLAI?
Title
Crash for scoped ip address in Envoy during DNS
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.9 (Medium)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26309 (GCVE-0-2026-26309)
Vulnerability from nvd – Published: 2026-03-10 19:04 – Updated: 2026-03-10 20:12
VLAI?
Title
Envoy has an off-by-one write in JsonEscaper::escapeString()
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString() can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the resulting string is later treated as a C-string. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.3 (Medium)
CWE
- CWE-193 - Off-by-one Error
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26308 (GCVE-0-2026-26308)
Vulnerability from nvd – Published: 2026-03-10 19:01 – Updated: 2026-03-10 20:12
VLAI?
Title
Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC (Role-Based Access Control) filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating each header value individually, Envoy concatenates all values into a single comma-separated string. This behavior allows attackers to bypass RBAC policies—specifically "Deny" rules—by sending duplicate headers, effectively obscuring the malicious value from exact-match mechanisms. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
7.5 (High)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2025-66220 (GCVE-0-2025-66220)
Vulnerability from nvd – Published: 2025-12-03 18:31 – Updated: 2025-12-03 19:10
VLAI?
Title
Envoy’s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.
Severity ?
5 (Medium)
CWE
- CWE-170 - Improper Null Termination
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-64763 (GCVE-0-2025-64763)
Vulnerability from nvd – Published: 2025-12-03 18:13 – Updated: 2025-12-03 20:02
VLAI?
Title
Envoy forwards early CONNECT data in TCP proxy mode
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwarding proxy upstream from Envoy then responds with a non-2xx status, this can cause a de-synchronized CONNECT tunnel state. By default Envoy continues to allow early CONNECT data to avoid disrupting existing deployments. The envoy.reloadable_features.reject_early_connect_data runtime flag can be set to reject CONNECT requests that send data before a 2xx response when intermediaries upstream from Envoy may reject establishment of a CONNECT tunnel.
Severity ?
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-64527 (GCVE-0-2025-64527)
Vulnerability from nvd – Published: 2025-12-03 18:04 – Updated: 2025-12-03 20:18
VLAI?
Title
Envoy crashes when JWT authentication is configured with the remote JWKS fetching
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allow_missing_or_failed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS fetch fails, onJwksError() callback triggers processing of the second token, which calls fetch() again on the same fetcher object. The original callback's reset() then clears the second fetch's state (receiver_ and request_) which causes a crash when the async HTTP response arrives.
Severity ?
6.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-62504 (GCVE-0-2025-62504)
Vulnerability from nvd – Published: 2025-10-16 21:23 – Updated: 2025-10-17 13:42
VLAI?
Title
Envoy Lua filter use-after-free when oversized rewritten response body causes crash
Summary
Envoy is an open source edge and service proxy. Envoy versions earlier than 1.36.2, 1.35.6, 1.34.10, and 1.33.12 contain a use-after-free vulnerability in the Lua filter. When a Lua script executing in the response phase rewrites a response body so that its size exceeds the configured per_connection_buffer_limit_bytes (default 1MB), Envoy generates a local reply whose headers override the original response headers, leaving dangling references and causing a crash. This results in denial of service. Updating to versions 1.36.2, 1.35.6, 1.34.10, or 1.33.12 fixes the issue. Increasing per_connection_buffer_limit_bytes (and for HTTP/2 the initial_stream_window_size) or increasing per_request_buffer_limit_bytes / request_body_buffer_limit can reduce the likelihood of triggering the condition but does not correct the underlying memory safety flaw.
Severity ?
6.5 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.1
Affected: >= 1.350, <= 1.35.5 Affected: >= 1.34.0, <= 1.34.9 Affected: <= 1.33.11 |
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CVE-2025-62409 (GCVE-0-2025-62409)
Vulnerability from nvd – Published: 2025-10-16 17:47 – Updated: 2025-10-16 19:22
VLAI?
Title
Envoy allows large requests and responses to cause TCP connection pool crash
Summary
Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 & 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.
Severity ?
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, < 1.36.1
Affected: >= 1.35.0, < 1.35.5 Affected: >= 1.34.0, < 1.34.9 Affected: < 1.33.10 |
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CVE-2025-55162 (GCVE-0-2025-55162)
Vulnerability from nvd – Published: 2025-09-03 19:51 – Updated: 2025-09-04 14:29
VLAI?
Title
Envoy: oAuth2 Filter Signout route will not clear cookies because of missing "secure;" flag
Summary
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In versions below 1.32.10 and 1.33.0 through 1.33.6, 1.34.0 through 1.34.4 and 1.35.0, insufficient Session Expiration in the Envoy OAuth2 filter leads to failed logout operations. When configured with __Secure- or __Host- prefixed cookie names, the filter fails to append the required Secure attribute to the Set-Cookie header during deletion. Modern browsers ignore this invalid request, causing the session cookie to persist. This allows a user to remain logged in after they believe they have logged out, creating a session hijacking risk on shared computers. The current implementation iterates through the configured cookie names to generate deletion headers but does not check for these prefixes. This failure to properly construct the deletion header means the user's session cookies are never removed by the browser, leaving the session active and allowing the next user of the same browser to gain unauthorized access to the original user's account and data. This is fixed in versions 1.32.10, 1.33.7, 1.34.5 and 1.35.1.
Severity ?
6.3 (Medium)
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.35.0, < 1.35.1
Affected: >= 1.34.0, < 1.34.5 Affected: >= 1.33.0, < 1.33.7 Affected: <= 1.32.0, < 1.32.10 |
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CVE-2025-54588 (GCVE-0-2025-54588)
Vulnerability from nvd – Published: 2025-09-02 23:39 – Updated: 2025-09-03 20:27
VLAI?
Title
Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults
Summary
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. Versions 1.34.0 through 1.34.4 and 1.35.0 contain a use-after-free (UAF) vulnerability in the DNS cache, causing abnormal process termination. The vulnerability is in Envoy's Dynamic Forward Proxy implementation, occurring when a completion callback for a DNS resolution triggers new DNS resolutions or removes existing pending resolutions. This condition may occur when the following conditions are met: dynamic Forwarding Filter is enabled, the `envoy.reloadable_features.dfp_cluster_resolves_hosts` runtime flag is enabled, and the Host header is modified between the Dynamic Forwarding Filter and Router filters. This issue is resolved in versions 1.34.5 and 1.35.1. To work around this issue, set the envoy.reloadable_features.dfp_cluster_resolves_hosts runtime flag to false.
Severity ?
7.5 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.34.0, < 1.34.5
Affected: >= 1.35.0, < 1.35.1 |
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CVE-2025-46821 (GCVE-0-2025-46821)
Vulnerability from nvd – Published: 2025-05-07 21:24 – Updated: 2025-05-08 14:11
VLAI?
Title
Envoy vulnerable to bypass of RBAC uri_template permission
Summary
Envoy is a cloud-native edge/middle/service proxy. Prior to versions 1.34.1, 1.33.3, 1.32.6, and 1.31.8, Envoy's URI template matcher incorrectly excludes the `*` character from a set of valid characters in the URI path. As a result URI path containing the `*` character will not match a URI template expressions. This can result in bypass of RBAC rules when configured using the `uri_template` permissions. This vulnerability is fixed in Envoy versions v1.34.1, v1.33.3, v1.32.6, v1.31.8. As a workaround, configure additional RBAC permissions using `url_path` with `safe_regex` expression.
Severity ?
5.3 (Medium)
CWE
- CWE-186 - Overly Restrictive Regular Expression
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
< 1.31.8
Affected: >= 1.32.0, < 1.32.6 Affected: >= 1.33.0, < 1.33.3 Affected: >= 1.34.0, < 1.34.1 |
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CVE-2025-30157 (GCVE-0-2025-30157)
Vulnerability from nvd – Published: 2025-03-21 14:49 – Updated: 2025-03-21 15:15
VLAI?
Title
Envoy crashes when HTTP ext_proc processes local replies
Summary
Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket handshake will trigger a local reply leading to the crash of Envoy. This vulnerability is fixed in 1.33.1, 1.32.4, 1.31.6, and 1.30.10.
Severity ?
6.5 (Medium)
CWE
- CWE-460 - Improper Cleanup on Thrown Exception
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.33.0, < 1.33.1
Affected: >= 1.32.0, < 1.32.4 Affected: >= 1.31.0, < 1.31.6 Affected: < 1.30.10 |
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CVE-2024-53271 (GCVE-0-2024-53271)
Vulnerability from nvd – Published: 2024-12-18 19:12 – Updated: 2024-12-18 21:34
VLAI?
Title
HTTP/1.1 multiple issues with envoy.reloadable_features.http1_balsa_delay_reset in envoy
Summary
Envoy is a cloud-native high-performance edge/middle/service proxy. In affected versions envoy does not properly handle http 1.1 non-101 1xx responses. This can lead to downstream failures in networked devices. This issue has been addressed in versions 1.31.5 and 1.32.3. Users are advised to upgrade. There are no known workarounds for this issue.
Severity ?
7.1 (High)
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.31.0, < 1.31.5
Affected: >= 1.32.0, < 1.32.3 |
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CVE-2026-26330 (GCVE-0-2026-26330)
Vulnerability from cvelistv5 – Published: 2026-03-10 19:19 – Updated: 2026-03-10 20:17
VLAI?
Title
Envoy global rate limit may crash when the response phase limit is enabled and the response phase request is failed directly
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, At the rate limit filter, if the response phase limit with apply_on_stream_done in the rate limit configuration is enabled and the response phase limit request fails directly, it may crash Envoy. When both the request phase limit and response phase limit are enabled, the safe gRPC client instance will be re-used for both the request phase request and response phase request. But after the request phase request is done, the inner state of the request phase limit request in gRPC client is not cleaned up. When a second limit request is sent at response phase, and the second limit request fails directly, the previous request's inner state may be accessed and result in crash. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.3 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26311 (GCVE-0-2026-26311)
Vulnerability from cvelistv5 – Published: 2026-03-10 19:14 – Updated: 2026-03-10 19:34
VLAI?
Title
Envoy HTTP: filter chain execution on reset streams causing UAF crash
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager (FilterManager) that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" (UAF) or state-corruption window where filter callbacks are invoked on an HTTP stream that has already been logically reset and cleaned up. The vulnerability resides in source/common/http/filter_manager.cc within the FilterManager::decodeData method. The ActiveStream object remains valid in memory during the deferred deletion window. If a DATA frame arrives on this stream immediately after the reset (e.g., in the same packet processing cycle), the HTTP/2 codec invokes ActiveStream::decodeData, which cascades to FilterManager::decodeData. FilterManager::decodeData fails to check the saw_downstream_reset_ flag. It iterates over the decoder_filters_ list and invokes decodeData() on filters that have already received onDestroy(). This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.9 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26310 (GCVE-0-2026-26310)
Vulnerability from cvelistv5 – Published: 2026-03-10 19:08 – Updated: 2026-03-10 20:12
VLAI?
Title
Crash for scoped ip address in Envoy during DNS
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.9 (Medium)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26309 (GCVE-0-2026-26309)
Vulnerability from cvelistv5 – Published: 2026-03-10 19:04 – Updated: 2026-03-10 20:12
VLAI?
Title
Envoy has an off-by-one write in JsonEscaper::escapeString()
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString() can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the resulting string is later treated as a C-string. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
5.3 (Medium)
CWE
- CWE-193 - Off-by-one Error
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2026-26308 (GCVE-0-2026-26308)
Vulnerability from cvelistv5 – Published: 2026-03-10 19:01 – Updated: 2026-03-10 20:12
VLAI?
Title
Envoy has an RBAC Header Validation Bypass via Multi-Value Header Concatenation
Summary
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, the Envoy RBAC (Role-Based Access Control) filter contains a logic vulnerability in how it validates HTTP headers when multiple values are present for the same header name. Instead of validating each header value individually, Envoy concatenates all values into a single comma-separated string. This behavior allows attackers to bypass RBAC policies—specifically "Deny" rules—by sending duplicate headers, effectively obscuring the malicious value from exact-match mechanisms. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Severity ?
7.5 (High)
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.37.0, < 1.37.1
Affected: >= 1.36.0, < 1.36.5 Affected: >= 1.35.0, < 1.35.9 Affected: < 1.34.13 |
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CVE-2025-66220 (GCVE-0-2025-66220)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:31 – Updated: 2025-12-03 19:10
VLAI?
Title
Envoy’s TLS certificate matcher for `match_typed_subject_alt_names` may incorrectly treat certificates containing an embedded null byte
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy’s mTLS certificate matcher for match_typed_subject_alt_names may incorrectly treat certificates containing an embedded null byte (\0) inside an OTHERNAME SAN value as valid matches.
Severity ?
5 (Medium)
CWE
- CWE-170 - Improper Null Termination
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-64763 (GCVE-0-2025-64763)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:13 – Updated: 2025-12-03 20:02
VLAI?
Title
Envoy forwards early CONNECT data in TCP proxy mode
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, when Envoy is configured in TCP proxy mode to handle CONNECT requests, it accepts client data before issuing a 2xx response and forwards that data to the upstream TCP connection. If a forwarding proxy upstream from Envoy then responds with a non-2xx status, this can cause a de-synchronized CONNECT tunnel state. By default Envoy continues to allow early CONNECT data to avoid disrupting existing deployments. The envoy.reloadable_features.reject_early_connect_data runtime flag can be set to reject CONNECT requests that send data before a 2xx response when intermediaries upstream from Envoy may reject establishment of a CONNECT tunnel.
Severity ?
CWE
- CWE-693 - Protection Mechanism Failure
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-64527 (GCVE-0-2025-64527)
Vulnerability from cvelistv5 – Published: 2025-12-03 18:04 – Updated: 2025-12-03 20:18
VLAI?
Title
Envoy crashes when JWT authentication is configured with the remote JWKS fetching
Summary
Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allow_missing_or_failed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS fetch fails, onJwksError() callback triggers processing of the second token, which calls fetch() again on the same fetcher object. The original callback's reset() then clears the second fetch's state (receiver_ and request_) which causes a crash when the async HTTP response arrives.
Severity ?
6.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.2
Affected: >= 1.35.0, <= 1.35.6 Affected: >= 1.34.0, <= 1.34.10 Affected: <= 1.33.12 |
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CVE-2025-62504 (GCVE-0-2025-62504)
Vulnerability from cvelistv5 – Published: 2025-10-16 21:23 – Updated: 2025-10-17 13:42
VLAI?
Title
Envoy Lua filter use-after-free when oversized rewritten response body causes crash
Summary
Envoy is an open source edge and service proxy. Envoy versions earlier than 1.36.2, 1.35.6, 1.34.10, and 1.33.12 contain a use-after-free vulnerability in the Lua filter. When a Lua script executing in the response phase rewrites a response body so that its size exceeds the configured per_connection_buffer_limit_bytes (default 1MB), Envoy generates a local reply whose headers override the original response headers, leaving dangling references and causing a crash. This results in denial of service. Updating to versions 1.36.2, 1.35.6, 1.34.10, or 1.33.12 fixes the issue. Increasing per_connection_buffer_limit_bytes (and for HTTP/2 the initial_stream_window_size) or increasing per_request_buffer_limit_bytes / request_body_buffer_limit can reduce the likelihood of triggering the condition but does not correct the underlying memory safety flaw.
Severity ?
6.5 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, <= 1.36.1
Affected: >= 1.350, <= 1.35.5 Affected: >= 1.34.0, <= 1.34.9 Affected: <= 1.33.11 |
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CVE-2025-62409 (GCVE-0-2025-62409)
Vulnerability from cvelistv5 – Published: 2025-10-16 17:47 – Updated: 2025-10-16 19:22
VLAI?
Title
Envoy allows large requests and responses to cause TCP connection pool crash
Summary
Envoy is a cloud-native, open source edge and service proxy. Prior to 1.36.1, 1.35.5, 1.34.9, and 1.33.10, large requests and responses can potentially trigger TCP connection pool crashes due to flow control management in Envoy. It will happen when the connection is closing but upstream data is still coming, resulting in a buffer watermark callback nullptr reference. The vulnerability impacts TCP proxy and HTTP 1 & 2 mixed use cases based on ALPN. This vulnerability is fixed in 1.36.1, 1.35.5, 1.34.9, and 1.33.10.
Severity ?
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.36.0, < 1.36.1
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CVE-2025-55162 (GCVE-0-2025-55162)
Vulnerability from cvelistv5 – Published: 2025-09-03 19:51 – Updated: 2025-09-04 14:29
VLAI?
Title
Envoy: oAuth2 Filter Signout route will not clear cookies because of missing "secure;" flag
Summary
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In versions below 1.32.10 and 1.33.0 through 1.33.6, 1.34.0 through 1.34.4 and 1.35.0, insufficient Session Expiration in the Envoy OAuth2 filter leads to failed logout operations. When configured with __Secure- or __Host- prefixed cookie names, the filter fails to append the required Secure attribute to the Set-Cookie header during deletion. Modern browsers ignore this invalid request, causing the session cookie to persist. This allows a user to remain logged in after they believe they have logged out, creating a session hijacking risk on shared computers. The current implementation iterates through the configured cookie names to generate deletion headers but does not check for these prefixes. This failure to properly construct the deletion header means the user's session cookies are never removed by the browser, leaving the session active and allowing the next user of the same browser to gain unauthorized access to the original user's account and data. This is fixed in versions 1.32.10, 1.33.7, 1.34.5 and 1.35.1.
Severity ?
6.3 (Medium)
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.35.0, < 1.35.1
Affected: >= 1.34.0, < 1.34.5 Affected: >= 1.33.0, < 1.33.7 Affected: <= 1.32.0, < 1.32.10 |
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CVE-2025-54588 (GCVE-0-2025-54588)
Vulnerability from cvelistv5 – Published: 2025-09-02 23:39 – Updated: 2025-09-03 20:27
VLAI?
Title
Envoy: Race condition in Dynamic Forward Proxy leads to use-after-free and segmentation faults
Summary
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. Versions 1.34.0 through 1.34.4 and 1.35.0 contain a use-after-free (UAF) vulnerability in the DNS cache, causing abnormal process termination. The vulnerability is in Envoy's Dynamic Forward Proxy implementation, occurring when a completion callback for a DNS resolution triggers new DNS resolutions or removes existing pending resolutions. This condition may occur when the following conditions are met: dynamic Forwarding Filter is enabled, the `envoy.reloadable_features.dfp_cluster_resolves_hosts` runtime flag is enabled, and the Host header is modified between the Dynamic Forwarding Filter and Router filters. This issue is resolved in versions 1.34.5 and 1.35.1. To work around this issue, set the envoy.reloadable_features.dfp_cluster_resolves_hosts runtime flag to false.
Severity ?
7.5 (High)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.34.0, < 1.34.5
Affected: >= 1.35.0, < 1.35.1 |
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CVE-2025-46821 (GCVE-0-2025-46821)
Vulnerability from cvelistv5 – Published: 2025-05-07 21:24 – Updated: 2025-05-08 14:11
VLAI?
Title
Envoy vulnerable to bypass of RBAC uri_template permission
Summary
Envoy is a cloud-native edge/middle/service proxy. Prior to versions 1.34.1, 1.33.3, 1.32.6, and 1.31.8, Envoy's URI template matcher incorrectly excludes the `*` character from a set of valid characters in the URI path. As a result URI path containing the `*` character will not match a URI template expressions. This can result in bypass of RBAC rules when configured using the `uri_template` permissions. This vulnerability is fixed in Envoy versions v1.34.1, v1.33.3, v1.32.6, v1.31.8. As a workaround, configure additional RBAC permissions using `url_path` with `safe_regex` expression.
Severity ?
5.3 (Medium)
CWE
- CWE-186 - Overly Restrictive Regular Expression
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
< 1.31.8
Affected: >= 1.32.0, < 1.32.6 Affected: >= 1.33.0, < 1.33.3 Affected: >= 1.34.0, < 1.34.1 |
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CVE-2025-30157 (GCVE-0-2025-30157)
Vulnerability from cvelistv5 – Published: 2025-03-21 14:49 – Updated: 2025-03-21 15:15
VLAI?
Title
Envoy crashes when HTTP ext_proc processes local replies
Summary
Envoy is a cloud-native high-performance edge/middle/service proxy. Prior to 1.33.1, 1.32.4, 1.31.6, and 1.30.10, Envoy's ext_proc HTTP filter is at risk of crashing if a local reply is sent to the external server due to the filter's life time issue. A known situation is the failure of a websocket handshake will trigger a local reply leading to the crash of Envoy. This vulnerability is fixed in 1.33.1, 1.32.4, 1.31.6, and 1.30.10.
Severity ?
6.5 (Medium)
CWE
- CWE-460 - Improper Cleanup on Thrown Exception
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| envoyproxy | envoy |
Affected:
>= 1.33.0, < 1.33.1
Affected: >= 1.32.0, < 1.32.4 Affected: >= 1.31.0, < 1.31.6 Affected: < 1.30.10 |
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