---
id: CVE-2026-40938
title: >-
  Tekton Pipelines project provides k8s-style resources for declaring
  CI/CD-style pipelines
summary: >-
  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 a…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-88
  - CWE-88
vendor: linuxfoundation
product: tekton_pipelines
affected:
  - 'tekton_pipelines >= 1.0.0, < 1.11.0'
patched:
  - tekton_pipelines 1.11.0
published: '2026-04-21'
updated: '2026-07-08'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-40938'
references:
  - url: 'https://github.com/tektoncd/pipeline/releases/tag/v1.11.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq
    label: security-advisories@github.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:17546'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:24359'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:24484'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:26519'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:26538'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-40938'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2460292'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://github.com/tektoncd/pipeline/security/advisories/GHSA-94jr-7pqp-xhcq
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40938.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.00904
epssPercentile: 0.58194
ingestedAt: '2026-07-08T13:51:10.474Z'
---

## Overview

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 a positional argument to git fetch without any validation that it does not begin with a - character. Because git parses flags from mixed positional arguments, an attacker can inject arbitrary git fetch flags such as --upload-pack=<binary>. Combined with the validateRepoURL function explicitly permitting URLs that begin with / (local filesystem paths), a tenant who can submit ResolutionRequest objects can chain these two behaviors to execute an arbitrary binary on the resolver pod. The tekton-pipelines-resolvers ServiceAccount holds cluster-wide get/list/watch on all Secrets, so code execution on the resolver pod enables full cluster-wide secret exfiltration. Versions 1.0.2, 1.3.4, 1.6.2, 1.9.3, and 1.11.1 fix the issue.

## Affected

- `tekton_pipelines >= 1.0.0, < 1.11.0`

## Remediation

Upgrade past the affected range:

- `tekton_pipelines 1.11.0`