CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2026-33022
Medium (6.5) in linuxfoundation tekton pipelines. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/tektoncd/pipeline 1.0.1, 1.10.2, 1.3.3.
Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Versions 0.60.0 through 1.0.0, 1.1.0 through 1.3.2, 1.4.0 through 1.6.0, 1.7.0 through 1.9.0, 1.10.0, and 1.10.1 have a denial-of-service vulnerability in that allows any user who can create a TaskRun or PipelineRun to crash the controller cluster-wide by setting .spec.taskRef.resolver (or .spec.pipelineRef.resolver) to a string of 31+ characters. The crash occurs because GenerateDeterministicNameFromSpec produces a name exceeding the 63-character DNS-1123 label limit, and its truncation logic panics on a [-1] slice bound since the generated name contains no spaces. Once crashed, the controller enters a CrashLoopBackOff on restart (as it re-reconciles the offending resource), blocking all CI/CD reconciliation until the resource is manually deleted. Built-in resolvers (git, cluster, bundles, hub) are unaffected due to their short names, but any custom resolver name triggers the bug. The fix truncates the resolver-name prefix instead of the full string, preserving the hash suffix for determinism and uniqueness. This issue has been patched in versions 1.0.1, 1.3.3, 1.6.1, 1.9.2 and 1.10.2.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 31% of CVEs (scores of 2026-10-31)
- CWE
- CWE-129
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linuxfoundation:tekton_pipelines
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cv4x-93xx-wgfj | Go | github.com/tektoncd/pipeline | >=0.60.0 <1.0.1 | 1.0.1 |
| GHSA-cv4x-93xx-wgfj | Go | github.com/tektoncd/pipeline | >=1.1.0 <1.3.3 | 1.3.3 |
| GHSA-cv4x-93xx-wgfj | Go | github.com/tektoncd/pipeline | >=1.4.0 <1.6.1 | 1.6.1 |
| GHSA-cv4x-93xx-wgfj | Go | github.com/tektoncd/pipeline | >=1.7.0 <1.9.2 | 1.9.2 |
| GHSA-cv4x-93xx-wgfj | Go | github.com/tektoncd/pipeline | >=1.10.0 <1.10.2 | 1.10.2 |
| GO-2026-4730 | Go | github.com/tektoncd/pipeline | >=0.60.0 <1.0.1 >=1.1.0 <1.3.3 >=1.4.0 <1.6.1 >=1.7.0 <1.9.2 >=1.10.0 <1.10.2 | 1.0.1, 1.3.3, 1.6.1, 1.9.2, 1.10.2 |