CVE-2026-33022: Tekton Pipelines controller panic via long resolver name in TaskRun/PipelineRun

March 17, 2026

A user with permission to create or update a TaskRun or PipelineRun can crash the Tekton Pipelines controller by setting .spec.taskRef.resolver (or .spec.pipelineRef.resolver) to a string of 31 characters or more, causing a denial of service for all reconciliation.

References

github.com/advisories/GHSA-cv4x-93xx-wgfj
github.com/tektoncd/pipeline
github.com/tektoncd/pipeline/security/advisories/GHSA-cv4x-93xx-wgfj
nvd.nist.gov/vuln/detail/CVE-2026-33022

Code Behaviors & Features

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