RHSA-2026:21932

Vulnerability from csaf_redhat - Published: 2026-05-29 09:15 - Updated: 2026-05-29 22:33
Summary
Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.20.5
Severity
Important
Notes
Topic: The 1.20.5 GA release of Red Hat OpenShift Pipelines Operator.. For more details see [product documentation](https://docs.redhat.com/en/documentation/red_hat_openshift_pipelines).
Details: The 1.20.5 release of Red Hat OpenShift Pipelines Operator.
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-2026-33186

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.

9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-551 - Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-33211

A flaw was found in Tekton Pipelines, specifically in the Tekton Pipelines git resolver. A tenant with permissions to create ResolutionRequests can exploit a path traversal vulnerability via the `pathInRepo` parameter. This allows the tenant to read arbitrary files from the resolver pod's filesystem, leading to information disclosure, including sensitive ServiceAccount tokens. The contents of these files are returned in a base64-encoded format.

9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-34986

A flaw was found in Go JOSE, a library for handling JSON Web Encryption (JWE) objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the application can crash. This leads to a denial of service (DoS), making the affected service unavailable to legitimate users.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-131 - Incorrect Calculation of Buffer Size
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:21932 self
https://access.redhat.com/security/cve/CVE-2026-33186 external
https://access.redhat.com/security/cve/CVE-2026-33211 external
https://access.redhat.com/security/cve/CVE-2026-34986 external
https://access.redhat.com/security/updates/classi… external
https://docs.redhat.com/en/documentation/red_hat_… external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-33186 self
https://bugzilla.redhat.com/show_bug.cgi?id=2449833 external
https://www.cve.org/CVERecord?id=CVE-2026-33186 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33186 external
https://github.com/grpc/grpc-go/security/advisori… external
https://access.redhat.com/security/cve/CVE-2026-33211 self
https://bugzilla.redhat.com/show_bug.cgi?id=2450554 external
https://www.cve.org/CVERecord?id=CVE-2026-33211 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33211 external
https://github.com/tektoncd/pipeline/commit/10fa5… external
https://github.com/tektoncd/pipeline/commit/31800… external
https://github.com/tektoncd/pipeline/commit/3ca7b… external
https://github.com/tektoncd/pipeline/commit/96138… external
https://github.com/tektoncd/pipeline/commit/b1fee… external
https://github.com/tektoncd/pipeline/commit/cdb4e… external
https://github.com/tektoncd/pipeline/commit/ec775… external
https://github.com/tektoncd/pipeline/security/adv… external
https://access.redhat.com/security/cve/CVE-2026-34986 self
https://bugzilla.redhat.com/show_bug.cgi?id=2455470 external
https://www.cve.org/CVERecord?id=CVE-2026-34986 external
https://nvd.nist.gov/vuln/detail/CVE-2026-34986 external
https://github.com/go-jose/go-jose/security/advis… external
https://pkg.go.dev/github.com/go-jose/go-jose/v4#… external
To clipboard 

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          "text": "Tekton Pipelines: github.com/tektoncd/pipeline: Tekton Pipelines: Information disclosure via path traversal in git resolver",
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          "text": "To exploit this flaw, an attacker needs to have the permission to create ResolutionRequests (e.g., by creating TaskRuns or PipelineRuns that use the git resolver) within at least one specific namespace, limiting the exposure of this issue to authenticated users. Also, an attacker can read any file readable by the resolver pod process, including cluster secrets, allowing an escalation of privileges from namespace-scoped access to cluster-wide access. Due to these reasons, this vulnerability has been rated with an important severity.",
          "title": "Statement"
        },
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          "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.",
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            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21932"
        },
        {
          "category": "workaround",
          "details": "To mitigate this vulnerability, restrict the creation of ResolutionRequests to trusted users and service accounts. Implement strict Role-Based Access Control (RBAC) policies to limit which tenants can create TaskRuns or PipelineRuns that utilize the Tekton Pipelines git resolver. This reduces the exposure by preventing unauthorized access to the resolver pod\u0027s filesystem.",
          "product_ids": [
            "Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Tekton Pipelines: github.com/tektoncd/pipeline: Tekton Pipelines: Information disclosure via path traversal in git resolver"
    },
    {
      "cve": "CVE-2026-34986",
      "cwe": {
        "id": "CWE-131",
        "name": "Incorrect Calculation of Buffer Size"
      },
      "discovery_date": "2026-04-06T17:01:34.639203+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2455470"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Go JOSE, a library for handling JSON Web Encryption (JWE) objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the application can crash. This leads to a denial of service (DoS), making the affected service unavailable to legitimate users.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object",
          "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": {
        "fixed": [
          "Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-34986"
        },
        {
          "category": "external",
          "summary": "RHBZ#2455470",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455470"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-34986",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-34986"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-34986",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34986"
        },
        {
          "category": "external",
          "summary": "https://github.com/go-jose/go-jose/security/advisories/GHSA-78h2-9frx-2jm8",
          "url": "https://github.com/go-jose/go-jose/security/advisories/GHSA-78h2-9frx-2jm8"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/github.com/go-jose/go-jose/v4#pkg-constants",
          "url": "https://pkg.go.dev/github.com/go-jose/go-jose/v4#pkg-constants"
        }
      ],
      "release_date": "2026-04-06T16:22:45.353000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-29T09:15:29+00:00",
          "details": "Red Hat OpenShift Pipelines is a cloud-native, continuous integration and\ncontinuous delivery (CI/CD) solution based on Kubernetes resources.\nIt uses Tekton building blocks to automate deployments across multiple\nplatforms by abstracting away the underlying implementation details.\nTekton introduces a number of standard custom resource definitions (CRDs)\nfor defining CI/CD pipelines that are portable across Kubernetes distributions.",
          "product_ids": [
            "Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:21932"
        },
        {
          "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 Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "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"
          },
          "products": [
            "Red Hat OpenShift Pipelines 1.2:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:f4100f181620f5424e66633dbdd3c7402c8db75f93c54fe092ff2301d8dd0015_amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object"
    }
  ]
}


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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.