CVE catalog

CVE-2026-40924

Tekton Pipelines project provides k8s-style resources…

[CVE catalog]

A flaw was found in Tekton Pipelines. A local user with specific permissions to create TaskRuns or PipelineRuns can exploit this by directing the HTTP resolver to an attacker-controlled server. This server can return a very large response body, leading to the tekton-pipelines-resolvers pod consuming excessive memory and being terminated by Kubernetes. Repeated exploitation of this resource exhaustion vulnerability can cause a sustained denial of service for the entire cluster's resolution services. github.com/tektoncd/pipeline: Tekton Pipelines: Denial of Service via large HTTP response body The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Severity
Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
0.32% · Oct 27, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Version impact has not been established. The original provider fields are retained below.

Provider details and historical evidence
Original provider fields
{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "tekton_pipelines",
      "ecosystem": "cpe",
      "fixed_version": "1.11.1"
    },
    {
      "name": "github.com/tektoncd/pipeline",
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "1.0.0"
            },
            {
              "fixed": "1.0.2"
            },
            {
              "introduced": "1.1.0"
            },
            {
              "fixed": "1.3.4"
            },
            {
              "introduced": "1.4.0"
            },
            {
              "fixed": "1.6.2"
            },
            {
              "introduced": "1.7.0"
            },
            {
              "fixed": "1.9.3"
            },
            {
              "introduced": "1.10.0"
            },
            {
              "fixed": "1.11.1"
            }
          ]
        }
      ],
      "ecosystem": "Go",
      "fixed_version": "1.11.1"
    },
    {
      "name": "tekton_pipelines",
      "ranges": [
        {
          "fixed": "1.11.1",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "fixed_version": "1.11.1",
      "provider_record_id": "NVD-CVE-2026-40924"
    }
  ]
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

Observed:

References

[FIRST EPSS] · [Go Vulnerability Database] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]