CVE-2026-40923
- Source
- https://cve.org/CVERecord?id=CVE-2026-40923
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40923.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-40923
- Aliases
- Related
- Published
- 2026-04-21T20:50:53.742Z
- Modified
- 2026-07-15T01:49:01.024630271Z
- Severity
-
- 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Tekton Pipelines: VolumeMount path restriction bypass via missing filepath.Clean in /tekton/ check
- Details
-
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, a validation bypass in the VolumeMount path restriction allows mounting volumes under restricted /tekton/ internal paths by using .. path traversal components. The restriction check uses strings.HasPrefix without filepath.Clean, so a path like /tekton/home/../results passes validation but resolves to /tekton/results at runtime. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.
- Database specific
{ "cna_assigner": "GitHub_M", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40923.json", "cwe_ids": [ "CWE-22" ] }- References
Affected packages
Git / github.com/tektoncd/pipeline
Affected ranges
- Type
- GIT
- Repo
- https://github.com/tektoncd/pipeline
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixed
- Database specific
{ "source": "AFFECTED_FIELD", "extracted_events": [ { "introduced": "1.0.0" }, { "fixed": "1.0.2" }, { "introduced": "1.2.0" }, { "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" } ] }