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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| tektoncd | pipeline | >= 1.0.0, < 1.0.2, >= 1.2.0, < 1.3.4, >= 1.4.0, < 1.6.2, >= 1.7.0, < 1.9.3, >= 1.10.0, < 1.11.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | tekton-chains | 0.26.3-r0 | — |
| Wolfi rolling | tkn | 0.44.1-r4 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/tektoncd/pipeline | >= 1.10.0, < 1.11.1 | 1.11.1 | GHSA-m2cx-gpqf-qf74 |
| Go | github.com/tektoncd/pipeline | >= 1.0.0, < 1.0.2 | 1.0.2 | GHSA-m2cx-gpqf-qf74 |
| Go | github.com/tektoncd/pipeline | >= 1.2.0, < 1.3.4 | 1.3.4 | GHSA-m2cx-gpqf-qf74 |
| Go | github.com/tektoncd/pipeline | >= 1.4.0, < 1.6.2 | 1.6.2 | GHSA-m2cx-gpqf-qf74 |
| Go | github.com/tektoncd/pipeline | >= 1.7.0, < 1.9.3 | 1.9.3 | GHSA-m2cx-gpqf-qf74 |
| Go | github.com/tektoncd/pipeline | >= 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 | 1.0.2, 1.3.4, 1.6.2, 1.9.3, 1.11.1 | GO-2026-5486 |
Advisories 1
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026