{"cve":"CVE-2026-40924","nvd":{"published":"2026-04-21T21:16:45.720","modified":"2026-10-26T22:10:00.163","status":"Modified","description":"Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1, the HTTP resolver's FetchHttpResource function calls io.ReadAll(resp.Body) with no response body size limit. Any tenant with permission to create TaskRuns or PipelineRuns that reference the HTTP resolver can point it at an attacker-controlled HTTP server that returns a very large response body within the 1-minute timeout window, causing the tekton-pipelines-resolvers pod to be OOM-killed by Kubernetes. Because all resolver types (Git, Hub, Bundle, Cluster, HTTP) run in the same pod, crashing this pod denies resolution service to the entire cluster. Repeated exploitation causes a sustained crash loop. The same vulnerable code path is reached by both the deprecated pkg/resolution/resolver/http and the current pkg/remoteresolution/resolver/http implementations. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400"],"references":["https://github.com/tektoncd/pipeline/releases/tag/v1.11.1","https://github.com/tektoncd/pipeline/security/advisories/GHSA-m2cx-gpqf-qf74","https://github.com/tektoncd/pipeline/security/advisories/GHSA-m2cx-gpqf-qf74"],"products":["linuxfoundation:tekton_pipelines"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-40924","score":0.00318,"percentile":0.24546,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-m2cx-gpqf-qf74","url":"https://osv.dev/vulnerability/GHSA-m2cx-gpqf-qf74","summary":"Tekton Pipelines: HTTP Resolver Unbounded Response Body Read Enables Denial of Service via Memory Exhaustion","modified":"2026-09-10T03:50:44.652968134Z","packages":[{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.10.0 <1.11.1"],"fixed":["1.11.1"]},{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.0.0 <1.0.2"],"fixed":["1.0.2"]},{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.2.0 <1.3.4"],"fixed":["1.3.4"]},{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.4.0 <1.6.2"],"fixed":["1.6.2"]},{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.7.0 <1.9.3"],"fixed":["1.9.3"]}]},{"id":"GO-2026-5486","url":"https://osv.dev/vulnerability/GO-2026-5486","summary":"Tekton Pipelines HTTP resolver denial of service via memory exhaustion in github.com/tektoncd/pipeline","modified":"2026-07-23T19:00:12.850671294Z","packages":[{"ecosystem":"Go","name":"github.com/tektoncd/pipeline","purl":"pkg:golang/github.com/tektoncd/pipeline","ranges":[">=1.0.0 <1.0.2",">=1.1.0 <1.3.4",">=1.4.0 <1.6.2",">=1.7.0 <1.9.3",">=1.10.0 <1.11.1"],"fixed":["1.0.2","1.3.4","1.6.2","1.9.3","1.11.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}