Is CVE-2026-40923 actively exploited?

No active exploitation of CVE-2026-40923 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-40923 be exploited remotely?

Yes. CVE-2026-40923 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-40923?

CVE-2026-40923 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2026-40923

CWE-22Published: April 21, 2026· Updated: Apr 27, 2026

5.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.4th

Official Description

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Prior to 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. This vulnerability is fixed in 1.11.1.

NVD Source

Technical Analysis

CVE-2026-40923 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.