What is CVE-2026-40938?

CVE-2026-40938 is a high-severity vulnerability in Linuxfoundation Tekton_pipelines, classified under Argument Injection. CVSS score: 7.5/10. Published 2026-04-21.

How severe is CVE-2026-40938?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Linuxfoundation Tekton_pipelines

CVE-2026-40938

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 git resolver's revision parameter is passed directly as…

EPSS: 0.000 (10.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Linuxfoundation Tekton_pipelines
Tektoncd Pipeline — versions >= 1.4.0, < 1.6.2, >= 1.2.0, < 1.3.4, >= 1.7.0, < 1.9.3

Weakness classification (CWE)

CWE-88 — Argument Injection

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-40938?: CVE-2026-40938 is a high-severity vulnerability in Linuxfoundation Tekton_pipelines, classified under Argument Injection. CVSS score: 7.5/10. Published 2026-04-21.
How severe is CVE-2026-40938?: High severity. CVSS v3 base score is 7.5 out of 10.