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(CVE-2026-8763)
Vulnerability from cleanstart – Published: 2026-09-01 11:17 – Updated: 2026-09-18 11:59 – Source website
Withdrawn 2026-09-18
VLAI
Summary
Security fixes in keycloak 26.7.1-r0
Details
Package keycloak version 26.7.1-r0 fixes 30 vulnerabilities: CVE-2026-8763, CVE-2026-59650, CVE-2026-58062, CVE-2026-59639, CVE-2026-12802...
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "keycloak"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "26.7.1-r0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"26.7.1-r0"
]
}
],
"credits": [],
"database_specific": {},
"details": "Package keycloak version 26.7.1-r0 fixes 30 vulnerabilities: CVE-2026-8763, CVE-2026-59650, CVE-2026-58062, CVE-2026-59639, CVE-2026-12802...",
"id": "CLEANSTART-2026-OP76655",
"modified": "2026-09-18T11:59:01.768079Z",
"published": "2026-09-01T11:17:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/keycloak/keycloak"
}
],
"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes in keycloak 26.7.1-r0",
"upstream": [
"CVE-2026-8763",
"CVE-2026-59650",
"CVE-2026-58062",
"CVE-2026-59639",
"CVE-2026-12802",
"CVE-2026-59642",
"CVE-2026-12816",
"CVE-2026-58060",
"CVE-2026-59651",
"CVE-2026-12185",
"CVE-2026-58059",
"CVE-2026-12803",
"CVE-2026-13506",
"CVE-2026-12860",
"CVE-2026-14682",
"CVE-2026-58061",
"CVE-2026-59645",
"CVE-2026-59647",
"CVE-2026-13586",
"CVE-2026-15055",
"CVE-2026-58063",
"CVE-2026-59901",
"CVE-2026-55851",
"CVE-2026-59899",
"CVE-2026-55831",
"CVE-2026-55833",
"CVE-2026-56745",
"CVE-2026-59900",
"CVE-2026-56819",
"ghsa-mfg7-5gfp-c4w3"
],
"withdrawn": "2026-09-18T11:59:01.768079Z"
}
CVE-2026-55833 (GCVE-0-2026-55833)
Vulnerability from cvelistv5 – Published: 2026-07-20 23:18 – Updated: 2026-07-21 13:03
VLAI
EPSS
VEX
Title
Netty SPDY zlib header block continues decoded expansion after maxHeaderSize truncation
Summary
Netty is a network application framework for development of protocol servers and clients. Prior to 4.1.136.Final and 4.2.16.Final, Netty SPDY header decoding continues inflating zlib-compressed header blocks after the raw header parser has exceeded `maxHeaderSize` and marked the frame truncated in `SpdyFrameCodec`, allowing a remote peer to send a small compressed `HEADERS` block that expands into much larger raw header data and causes compression-amplified CPU and allocation churn. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 13:03 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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{
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"discovery": "UNKNOWN"
},
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}
},
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CVE-2026-55851 (GCVE-0-2026-55851)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:22 – Updated: 2026-07-23 14:04
VLAI
EPSS
VEX
Title
Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final up to (but not including) 4.2.16.Final, and 4.1.0.Final up to (but not including) 4.1.135, the `HAProxyMessageDecoder` in Netty's `codec-haproxy` module performs protocol version detection by reading the 13th byte as a signed Java `byte` and widening it to `int` without masking; a PROXY protocol v2 binary prefix followed by version byte `0xFF` sign-extends to `-1`, collides with the decoder's need-more-data sentinel, and causes `ByteToMessageDecoder` to accumulate inbound bytes in an unbounded `cumulation` buffer until direct memory is exhausted. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 14:04 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-56745 (GCVE-0-2026-56745)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:31 – Updated: 2026-07-22 15:30
VLAI
EPSS
VEX
Title
Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, the `SpdyHttpDecoder` handler in Netty's SPDY-to-HTTP codec allocates a pooled `ByteBuf` when processing a client-initiated `SYN_STREAM` frame with `FLAG_FIN=0` and stores the partially constructed `FullHttpRequest` in `messageMap`; when the remote peer sends `RST_STREAM` for that stream or the accumulated content exceeds `maxContentLength`, the decoder removes the entry but does not release the pooled `ByteBuf`, causing native memory exhaustion. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 15:30 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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"discovery": "UNKNOWN"
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CVE-2026-56819 (GCVE-0-2026-56819)
Vulnerability from cvelistv5 – Published: 2026-07-21 22:11 – Updated: 2026-07-23 13:55
VLAI
EPSS
VEX
Title
Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompressor.writeInbound(data.retain())` and does not release the retained buffer on the error path, eventually exhausting direct memory and crashing the JVM. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 13:55 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-58059 (GCVE-0-2026-58059)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:41 – Updated: 2026-08-03 15:32
VLAI
EPSS
VEX
Title
Quadratic-time escaping when stringifying X.500 distinguished names
Summary
In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:32 UTC
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/7bf20eea8… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
0 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
1.0.0 , < 1.0.2.7
(maven)
Affected: 2.0.0 , < 2.0.2 (maven) Affected: 2.1.0 , < 2.1.3 (maven) |
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CVE-2026-58060 (GCVE-0-2026-58060)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:37 – Updated: 2026-08-03 15:34
VLAI
EPSS
VEX
Title
HSS public-key level count unbounded, enabling huge allocation on verify
Summary
In Bouncy Castle for Java before 1.85, HSS public-key level count unbounded, enabling huge allocation on verify. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:34 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/311cabbb6… | patch |
| https://github.com/bcgit/bc-java/commit/6c9f30b3f… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
1.65 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
2.0.0 , < 2.0.2
(maven)
Affected: 2.1.0 , < 2.1.3 (maven) |
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CVE-2026-58061 (GCVE-0-2026-58061)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:36 – Updated: 2026-08-03 15:35
VLAI
EPSS
VEX
Title
CCM-family modes write plaintext to caller buffer before tag check
Summary
In Bouncy Castle for Java before 1.85, CCM-family modes write plaintext to caller buffer before tag check. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:35 UTC
CWE
- CWE-354 - Improper Validation of Integrity Check Value
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/cd4a5ab3a… | patch |
| https://github.com/bcgit/bc-java/commit/08d675106… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
0 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
1.0.0 , < 1.0.2.7
(maven)
Affected: 2.0.0 , < 2.0.2 (maven) Affected: 2.1.0 , < 2.1.3 (maven) |
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CVE-2026-58062 (GCVE-0-2026-58062)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:35 – Updated: 2026-08-03 18:27
VLAI
EPSS
VEX
Title
Stapled OCSP response accepted without binding to the checked certificate
Summary
In Bouncy Castle for Java before 1.85, Stapled OCSP response accepted without binding to the checked certificate. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 18:26 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/add5f8226… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
1.66 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
2.0.0 , < 2.0.2
(maven)
Affected: 2.1.0 , < 2.1.3 (maven) |
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CVE-2026-58063 (GCVE-0-2026-58063)
Vulnerability from cvelistv5 – Published: 2026-08-03 02:29 – Updated: 2026-08-03 15:36
VLAI
EPSS
VEX
Title
BCFKS keystore load honours unbounded KDF cost from untrusted file
Summary
In Bouncy Castle for Java before 1.85, BCFKS keystore load honours unbounded KDF cost from untrusted file. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 15:36 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/81737a56e… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
0 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
1.0.0 , < 1.0.2.7
(maven)
Affected: 2.0.0 , < 2.0.2 (maven) Affected: 2.1.0 , < 2.1.3 (maven) |
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"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
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"scenarios": [
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"value": "GENERAL"
}
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],
"problemTypes": [
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"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
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],
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"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630",
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"title": "BCFKS keystore load honours unbounded KDF cost from untrusted file",
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},
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"dateUpdated": "2026-08-03T15:36:41.662Z",
"state": "PUBLISHED"
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CVE-2026-59639 (GCVE-0-2026-59639)
Vulnerability from cvelistv5 – Published: 2026-08-03 00:56 – Updated: 2026-08-03 13:24
VLAI
EPSS
VEX
Title
CMS verifySignatures returns true for SignedData with zero signers
Summary
In Bouncy Castle for Java before 1.85, CMS verifySignatures returns true for SignedData with zero signers. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (2.1.X series).
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 13:24 UTC
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bcgit/bc-java/wiki/CVE%E2%80%9… | vendor-advisory |
| https://github.com/bcgit/bc-java/commit/99ddc6dcc… | patch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA |
Affected:
0 , < 1.85
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA |
Affected:
2.73.0 , < 2.73.12
(maven)
|
|
| Legion of the Bouncy Castle Inc. | BC-FJA |
Affected:
1.0.0 , < 1.0.12
(maven)
Affected: 2.0.0 , < 2.0.12 (maven) Affected: 2.1.0 , < 2.1.12 (maven) |
{
"containers": {
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"metrics": [
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"options": [
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{
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},
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"timestamp": "2026-08-03T13:24:06.309527Z",
"version": "2.0.3"
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},
"title": "CISA ADP Vulnrichment"
}
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"cna": {
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"defaultStatus": "unaffected",
"modules": [
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],
"packageName": "bcpkix",
"packageURL": "pkg:maven/org.bouncycastle/bcpkix-jdk18on",
"platforms": [
"all"
],
"product": "BC-JAVA",
"programFiles": [
"CMSSignedData"
],
"repo": "https://github.com/bcgit/bc-java",
"vendor": "Legion of the Bouncy Castle Inc.",
"versions": [
{
"lessThan": "1.85",
"status": "affected",
"version": "0",
"versionType": "maven"
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"platforms": [
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],
"product": "BC-LTS-JAVA",
"programFiles": [
"CMSSignedData"
],
"repo": "https://github.com/bcgit/bc-lts-java",
"vendor": "Legion of the Bouncy Castle Inc.",
"versions": [
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"status": "affected",
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},
{
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"packageURL": "pkg:maven/org.bouncycastle/bcpkix-fips",
"platforms": [
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"product": "BC-FJA",
"vendor": "Legion of the Bouncy Castle Inc.",
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{
"lessThan": "2.1.12",
"status": "affected",
"version": "2.1.0",
"versionType": "maven"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "reporter",
"value": "Alex Gaynor in collaboration with Claude and Anthropic Research"
}
],
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}
],
"metrics": [
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"Recovery": "NOT_DEFINED",
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"source": {
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"title": "CMS verifySignatures returns true for SignedData with zero signers",
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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