Bug 2559906 (CVE-2026-53942) - CVE-2026-53942 conda: Conda Organization Infrastructure: Pwn Request in update workflow allows PR-controlled template rendering with SYNC_TOKEN
Summary: CVE-2026-53942 conda: Conda Organization Infrastructure: Pwn Request in updat...
Keywords:
Status: NEW
Alias: CVE-2026-53942
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2562144 2562147
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-23 14:38 UTC by OSIDB Bzimport
Modified: 2026-10-27 18:01 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-23 14:38:20 UTC
Conda Organization Infrastructure is a centralized location for infrastructure codes. Prior to commit 9c0f238, a GitHub Actions Pwn Request vulnerability appears to remain present in conda/conda. The affected workflow is .github/workflows/update.yml. It is triggered by issue_comment events containing @conda-bot render or @conda-bot recreate. For the render path, the workflow obtains the pull request head repository and branch from the PR API, checks out that PR-controlled repository/ref using secrets.SYNC_TOKEN, and then runs conda/actions/template-files@7f6830b1428a9bd47f0b068892c77eae95207037. The external template-files action reads its default configuration and templates from the checked-out working directory. In the confirmed finding, that action uses an unsandboxed Jinja2 environment to render attacker-controlled template content. This creates a Pwn Request chain in which an untrusted PR/comment path can reach template rendering in a privileged token context. This issue has been patched via commit 9c0f238.


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