RHSA-2026:22485
Vulnerability from csaf_redhat - Published: 2026-06-02 14:17 - Updated: 2026-06-08 09:46A flaw was found in the Go standard library packages `crypto/x509` and `crypto/tls`. During the process of building a certificate chain, an attacker can provide a large number of intermediate certificates. This excessive input is not properly limited, leading to an uncontrolled amount of work being performed. This can result in a denial of service (DoS) condition, making the affected system or application unavailable to legitimate users.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
Vendor Fix
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
A flaw was found in Go's `crypto/x509` package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service (DoS) for applications or systems performing certificate validation.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
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A flaw was found in the internal/syscall/unix package in the Go standard library. If the target of the `Root.Chmod` function is replaced with a symbolic link during execution, specifically after `Root.Chmod` checks the target but before acting, the `chmod` operation will be performed on the file the symbolic link points to. This issue can bypass directory restrictions and lead to unauthorized permission changes on the filesystem.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
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A flaw was found in the `crypto/tls` package within the Go (golang) standard library, specifically affecting TLS 1.3 connections. A remote attacker can exploit this vulnerability by sending multiple key update messages in a single record after the handshake. This can cause the connection to deadlock, leading to uncontrolled consumption of resources and ultimately a denial of service (DoS).
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed `:path` that omits the mandatory leading slash. This allows the attacker to bypass defined security policies, potentially leading to unauthorized access to services or information disclosure.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
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A flaw was found in the `crypto/x509` package within Go (golang). When verifying a certificate chain, excluded DNS (Domain Name System) constraints are not correctly applied to wildcard DNS Subject Alternative Names (SANs) if the case of the SAN differs from the constraint. This oversight could allow an attacker to bypass certificate validation, potentially leading to the acceptance of a malicious certificate that should have been rejected. This issue specifically impacts the validation of trusted certificate chains.
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:77f1e202337d716cd2fe7a6701efdeed9cae719f3dfdadf7a0fd4574a11b6ed8_amd64 | — |
Vendor Fix
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:b362fa9e2a18aa84f2393cce8555d34a9c8de822c65756897717ad54e2aa7c45_ppc64le | — |
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|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:bb7ee5838e15f9a31c12af6f4629bb90ac0b41eeee98e0bac4642c6a764944cb_s390x | — |
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| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-rhel9-operator@sha256:c7d68fdde482c4df1768b99ca6cb6fb358410a152020aca8cfac27bcf77d813b_arm64 | — |
Vendor Fix
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| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Lightspeed (formerly Insights) for Runtimes 1:registry.redhat.io/rh-lightspeed-runtimes/runtimes-inventory-operator-bundle@sha256:0afe9ca958403340a8ab4d89e07c4b685ea69cbfd5b94c3bc76b5db85afd152d_amd64 | — |
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{
"cve": "CVE-2026-32282",
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"id": "CWE-367",
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"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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{
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"summary": "https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3",
"url": "https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3"
}
],
"release_date": "2026-03-20T22:23:32.147000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-06-02T14:17:27+00:00",
"details": "Before applying this update, make sure all previously released errata relevant to your system have been applied.\n\nFor details on how to apply this update, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:22485"
},
{
"category": "workaround",
"details": "To mitigate this issue, implement infrastructure-level normalization to ensure all incoming HTTP/2 `:path` headers are properly formatted with a leading slash before reaching the gRPC-Go server. This can be achieved by configuring a reverse proxy or API gateway to validate and normalize the `:path` header. Ensure that any such intermediary is properly configured and restarted to apply the changes, which may temporarily impact service availability.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "google.golang.org/grpc/grpc-go: google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation"
},
{
"cve": "CVE-2026-33810",
"cwe": {
"id": "CWE-1289",
"name": "Improper Validation of Unsafe Equivalence in Input"
},
"discovery_date": "2026-04-08T02:01:09.100830+00:00",
"flags": [
{
"label": "vulnerable_code_not_present",
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]
}
],
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2456335"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the `crypto/x509` package within Go (golang). When verifying a certificate chain, excluded DNS (Domain Name System) constraints are not correctly applied to wildcard DNS Subject Alternative Names (SANs) if the case of the SAN differs from the constraint. This oversight could allow an attacker to bypass certificate validation, potentially leading to the acceptance of a malicious certificate that should have been rejected. This issue specifically impacts the validation of trusted certificate chains.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
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"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-33810"
},
{
"category": "external",
"summary": "RHBZ#2456335",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456335"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-33810",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33810"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33810",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33810"
},
{
"category": "external",
"summary": "https://go.dev/cl/763763",
"url": "https://go.dev/cl/763763"
},
{
"category": "external",
"summary": "https://go.dev/issue/78332",
"url": "https://go.dev/issue/78332"
},
{
"category": "external",
"summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"category": "external",
"summary": "https://pkg.go.dev/vuln/GO-2026-4866",
"url": "https://pkg.go.dev/vuln/GO-2026-4866"
}
],
"release_date": "2026-04-08T01:06:56.546000+00:00",
"remediations": [
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"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
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"version": "3.1"
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"threats": [
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}
],
"title": "crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application"
}
]
}
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.