Vulnerability-Lookup

RHSA-2026:20460

Vulnerability from csaf_redhat - Published: 2026-05-25 15:04 - Updated: 2026-06-30 19:23

Summary

Red Hat Security Advisory: Kiali 2.22.4 for Red Hat OpenShift Service Mesh 3.3

Severity

Moderate

Notes

Topic: Kiali 2.22.4 for Red Hat OpenShift Service Mesh 3.3 is now available. An update is now available for Red Hat OpenShift Service Mesh 3.3. This advisory contains the RPM packages for the Kiali component. Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Details: Kiali 2.22.4, for Red Hat OpenShift Service Mesh 3.3, provides observability for the service mesh by offering a visual representation of the mesh topology and metrics, helping users monitor, trace, and manage efficiently. Security Fix(es): * CVE-2026-32281 Go crypto/x509: Denial of Service via inefficient certificate chain validation (OSSM-13870) 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.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2026-32281

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.

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-1050 - Excessive Platform Resource Consumption within a Loop

Affected products

Fixed 4 products

Product	Version	Remediation
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:801430f3d82d109bfecd3d1e1703200dc98a6c35eee0330b1c90d0fb4804ae11_ppc64le	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:a4dc7862130d17dd424af3b3e285850448a7c85bfcc191bce9afa42d9f5c71f7_arm64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e4e55c3b1e398a962cbde38dd30260c77514d97e558028e0991f4a57bcb8d0be_amd64	—	Vendor Fix fix Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:f588d5d77bb0b4efdfca01f1ca7414fcadc90a97b165628b8f99bdd4df80c8a7_s390x	—	Vendor Fix fix Workaround

Known not affected 9 products

Product	Version	Remediation
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-operator-bundle@sha256:5f0d9c37da0df2e01de1965b121a0beffd3a4a61b29f317058eee3ed48a5411c_amd64	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:0cd332b82542de28dc6d2dd7e955924fe3de35a5206bc2e9f4d4e2bd9a591148_amd64	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:625caa76382f8236b0ae5c1c438008a61f64a7b1497f861fef475f7428da477c_ppc64le	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:6395e4a973d90ebb1250a4f7aa131ab812eb5d9d3bc5900ccb329e87b8f1c9ea_s390x	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b5a4fd9b6ec6eef405c167cbe70fde3c2618f26fb7ce837bf1d56c36e6064e1f_arm64	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:5bc3aab90ba7a7b6c1971110f235b67bbc3e1bcfa5c312b7cc7cfcd81d25912c_ppc64le	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:b136ce6fcc852f6af963c35f1a39bfecb942b0189a26e22b9e404b5ceca0be13_amd64	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:daa5ce7c32434365161ed729a6fdb88587e658347e368e143b2338285bf44a29_arm64	—	Workaround
Unresolved product id: Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:f43ad850d505a0cd2ce61970413389c5ac2e23edba4891e3977e5d541a09b33b_s390x	—	Workaround

Threats

Impact Moderate

References

13 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:20460	self
https://access.redhat.com/security/cve/CVE-2026-32281	external
https://access.redhat.com/security/updates/classi…	external
https://access.redhat.com/security/updates/classi…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-32281	self
https://bugzilla.redhat.com/show_bug.cgi?id=2456333	external
https://www.cve.org/CVERecord?id=CVE-2026-32281	external
https://nvd.nist.gov/vuln/detail/CVE-2026-32281	external
https://go.dev/cl/758061	external
https://go.dev/issue/78281	external
https://groups.google.com/g/golang-announce/c/0uY…	external
https://pkg.go.dev/vuln/GO-2026-4946	external

JSON

To clipboard

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        "name": "Excessive Platform Resource Consumption within a Loop"
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2456333"
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        {
          "category": "description",
          "text": "A flaw was found in Go\u0027s `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.",
          "title": "Vulnerability description"
        },
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          "category": "summary",
          "text": "crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw occurs during the validation of otherwise trusted certificate chains that contain a large number of policy mappings, leading to excessive resource consumption. Exploitation requires an attacker to present a specially crafted, yet trusted, certificate chain which would require the attacker has already compromised a trusted certificate root. Red Hat continuously monitors certificate authorities and curates the set which is trusted by default for Red Hat products.",
          "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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        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-32281"
        },
        {
          "category": "external",
          "summary": "RHBZ#2456333",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456333"
        },
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-32281",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-32281"
        },
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          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-32281",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32281"
        },
        {
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          "summary": "https://go.dev/cl/758061",
          "url": "https://go.dev/cl/758061"
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          "url": "https://go.dev/issue/78281"
        },
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          "summary": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU",
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
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          "url": "https://pkg.go.dev/vuln/GO-2026-4946"
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      "release_date": "2026-04-08T01:06:58.354000+00:00",
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          "category": "vendor_fix",
          "date": "2026-05-25T15:04:34+00:00",
          "details": "See Kiali 2.22.4 documentation at https://docs.redhat.com/en/documentation/red_hat_openshift_service_mesh/3.3/html/observability/kiali-operator-provided-by-red-hat",
          "product_ids": [
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:801430f3d82d109bfecd3d1e1703200dc98a6c35eee0330b1c90d0fb4804ae11_ppc64le",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:a4dc7862130d17dd424af3b3e285850448a7c85bfcc191bce9afa42d9f5c71f7_arm64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e4e55c3b1e398a962cbde38dd30260c77514d97e558028e0991f4a57bcb8d0be_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:f588d5d77bb0b4efdfca01f1ca7414fcadc90a97b165628b8f99bdd4df80c8a7_s390x"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:20460"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-operator-bundle@sha256:5f0d9c37da0df2e01de1965b121a0beffd3a4a61b29f317058eee3ed48a5411c_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:0cd332b82542de28dc6d2dd7e955924fe3de35a5206bc2e9f4d4e2bd9a591148_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:625caa76382f8236b0ae5c1c438008a61f64a7b1497f861fef475f7428da477c_ppc64le",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:6395e4a973d90ebb1250a4f7aa131ab812eb5d9d3bc5900ccb329e87b8f1c9ea_s390x",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b5a4fd9b6ec6eef405c167cbe70fde3c2618f26fb7ce837bf1d56c36e6064e1f_arm64",
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            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:f43ad850d505a0cd2ce61970413389c5ac2e23edba4891e3977e5d541a09b33b_s390x",
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            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e4e55c3b1e398a962cbde38dd30260c77514d97e558028e0991f4a57bcb8d0be_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:f588d5d77bb0b4efdfca01f1ca7414fcadc90a97b165628b8f99bdd4df80c8a7_s390x"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-operator-bundle@sha256:5f0d9c37da0df2e01de1965b121a0beffd3a4a61b29f317058eee3ed48a5411c_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:0cd332b82542de28dc6d2dd7e955924fe3de35a5206bc2e9f4d4e2bd9a591148_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:625caa76382f8236b0ae5c1c438008a61f64a7b1497f861fef475f7428da477c_ppc64le",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:6395e4a973d90ebb1250a4f7aa131ab812eb5d9d3bc5900ccb329e87b8f1c9ea_s390x",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9@sha256:b5a4fd9b6ec6eef405c167cbe70fde3c2618f26fb7ce837bf1d56c36e6064e1f_arm64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:5bc3aab90ba7a7b6c1971110f235b67bbc3e1bcfa5c312b7cc7cfcd81d25912c_ppc64le",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:b136ce6fcc852f6af963c35f1a39bfecb942b0189a26e22b9e404b5ceca0be13_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:daa5ce7c32434365161ed729a6fdb88587e658347e368e143b2338285bf44a29_arm64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9-operator@sha256:f43ad850d505a0cd2ce61970413389c5ac2e23edba4891e3977e5d541a09b33b_s390x",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:801430f3d82d109bfecd3d1e1703200dc98a6c35eee0330b1c90d0fb4804ae11_ppc64le",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:a4dc7862130d17dd424af3b3e285850448a7c85bfcc191bce9afa42d9f5c71f7_arm64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:e4e55c3b1e398a962cbde38dd30260c77514d97e558028e0991f4a57bcb8d0be_amd64",
            "Red Hat OpenShift Service Mesh 3.3:registry.redhat.io/openshift-service-mesh/kiali-rhel9@sha256:f588d5d77bb0b4efdfca01f1ca7414fcadc90a97b165628b8f99bdd4df80c8a7_s390x"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation"
    }
  ]
}

CVE-2026-32281 (GCVE-0-2026-32281)

Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:19

Title

Inefficient policy validation in crypto/x509

Summary

Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

References

4 references

URL	Tags
https://go.dev/cl/758061
https://go.dev/issue/78281
https://groups.google.com/g/golang-announce/c/0uY…
https://pkg.go.dev/vuln/GO-2026-4946

Impacted products

1 product

Vendor	Product	Version
Go standard library	crypto/x509	Affected: 0 , < 1.25.9 (semver) Affected: 1.26.0-0 , < 1.26.2 (semver)

Credits

Jakub Ciolek - https://ciolek.dev

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-32281",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-13T17:52:37.734298Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-13T18:19:44.779Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
          "programRoutines": [
            {
              "name": "policiesValid"
            },
            {
              "name": "Certificate.Verify"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.25.9",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.26.2",
              "status": "affected",
              "version": "1.26.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Jakub Ciolek - https://ciolek.dev"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-407: Inefficient Algorithmic Complexity",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T01:06:58.354Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/758061"
        },
        {
          "url": "https://go.dev/issue/78281"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4946"
        }
      ],
      "title": "Inefficient policy validation in crypto/x509"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2026-32281",
    "datePublished": "2026-04-08T01:06:58.354Z",
    "dateReserved": "2026-03-11T16:38:46.556Z",
    "dateUpdated": "2026-04-13T18:19:44.779Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

RHSA-2026:20460

CVE-2026-32281 (GCVE-0-2026-32281)

Tags

Sightings

Nomenclature