---
title: "CVE-2026-33211: Path traversal in Tekton Pipelines git resolver allows reading arbitrary files from the resolver pod"
url: https://erroneo.us/security/cve/CVE-2026-33211/
description: "CVE-2026-33211 (github.com/tektoncd/pipeline (Go)): Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-03-23
date_modified: 2026-09-07
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-33211"
kev: false
cvss: 9.6
epss: 0.00729
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-33211: Path traversal in Tekton Pipelines git resolver allows reading arbitrary files from the resolver pod

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.7% , percentile 54: FIRST’s model estimates a 0.7% chance of exploitation activity in the next 30 days, higher than 54% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes github.com/tektoncd/pipeline (Go) >= 1.0.0, < 1.0.1, fixed in 1.0.1 ; github.com/tektoncd/pipeline (Go) >= 1.1.0, < 1.3.3, fixed in 1.3.3 ; github.com/tektoncd/pipeline (Go) >= 1.4.0, < 1.6.1, fixed in 1.6.1 ; github.com/tektoncd/pipeline (Go) >= 1.7.0, < 1.9.2, fixed in 1.9.2 . Check your lockfile, including transitive dependencies.

## What it is

Tekton Pipelines project provides k8s-style resources for declaring CI/CD-style pipelines. Starting in version 1.0.0 and prior to versions 1.0.1, 1.3.3, 1.6.1, 1.9.2, and 1.10.2, the Tekton Pipelines git resolver is vulnerable to path traversal via the pathInRepo parameter. A tenant with permission to create ResolutionRequests (e.g. by creating TaskRuns or PipelineRuns that use the git resolver) can read arbitrary files from the resolver pod's filesystem, including ServiceAccount tokens. The file contents are returned base64-encoded in resolutionrequest.status.data. Versions 1.0.1, 1.3.3, 1.6.1, 1.9.2, and 1.10.2 contain a patch.

## Affected packages

- Go `github.com/tektoncd/pipeline` >= 1.0.0, < 1.0.1 → fixed: 1.0.1
- Go `github.com/tektoncd/pipeline` >= 1.1.0, < 1.3.3 → fixed: 1.3.3
- Go `github.com/tektoncd/pipeline` >= 1.4.0, < 1.6.1 → fixed: 1.6.1
- Go `github.com/tektoncd/pipeline` >= 1.7.0, < 1.9.2 → fixed: 1.9.2
- Go `github.com/tektoncd/pipeline` >= 1.10.0, < 1.10.2 → fixed: 1.10.2

## Affected products (CVE record)

- tektoncd pipeline: >= 1.0.0, < 1.0.1, >= 1.1.0, < 1.3.3, >= 1.4.0, < 1.6.1, >= 1.7.0, < 1.9.2, >= 1.10.0, < 1.10.2

## Severity

- GitHub_M CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`
- redhat-SADP CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`
- GitHub CVSS 3.1: 9.6 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact partial .
- FIRST EPSS (model of 2026-10-21): 0.73% probability of exploitation activity in the next 30 days; percentile 54.

## Sources

- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:10155)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:10158)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:6170)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:6166)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:24484)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:10066)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:21932)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:21931)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:10026)
- [access.redhat.com](https://access.redhat.com/errata/RHSA-2026:10125)
- [GitHub Advisory GHSA-j5q5-j9gm-2w5c](https://github.com/advisories/GHSA-j5q5-j9gm-2w5c)
- [CVE.org record CVE-2026-33211](https://www.cve.org/CVERecord?id=CVE-2026-33211)
- [NVD entry CVE-2026-33211](https://nvd.nist.gov/vuln/detail/CVE-2026-33211)
- [github.com](https://github.com/tektoncd/pipeline/security/advisories/GHSA-j5q5-j9gm-2w5c)
- [github.com](https://github.com/tektoncd/pipeline/commit/10fa538f9a2b6d01c75138f1ed7ba3da0e34687c)
- [github.com](https://github.com/tektoncd/pipeline/commit/318006c4e3a5)
- [github.com](https://github.com/tektoncd/pipeline/commit/3ca7bc6e6dd1d97f80b84f78370d91edaf023cbd)
- [github.com](https://github.com/tektoncd/pipeline/commit/961388fcf3374bc7656d28ab58ca84987e0a75ae)
- [github.com](https://github.com/tektoncd/pipeline/commit/b1fee65b88aa969069c14c120045e97c37d9ee5e)
- [github.com](https://github.com/tektoncd/pipeline/commit/cdb4e1e97a4f3170f9bc2cbfff83a6c8107bc3db)
- [github.com](https://github.com/tektoncd/pipeline/commit/ec7755031a183b345cf9e64bea0e0505c1b9cb78)
- [access.redhat.com](https://access.redhat.com/security/cve/CVE-2026-33211)
- [RHBZ#2450554](https://bugzilla.redhat.com/show_bug.cgi?id=2450554)
- [security.access.redhat.com](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33211.json)

---
Source page: https://erroneo.us/security/cve/CVE-2026-33211/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt