Bug 2562147 - CVE-2026-53942 conda: Conda Organization Infrastructure: Pwn Request in update workflow allows PR-controlled template rendering with SYNC_TOKEN [epel-all]
Summary: CVE-2026-53942 conda: Conda Organization Infrastructure: Pwn Request in updat...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: conda
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Zbigniew Jędrzejewski-Szmek
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["a7cb0c7c-1562-4c3c-9af4-f...
Depends On:
Blocks: CVE-2026-53942
TreeView+ depends on / blocked
 
Reported: 2026-10-27 18:01 UTC by Ronit Dey
Modified: 2026-10-28 01:27 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-10-28 01:27:26 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Ronit Dey 2026-10-27 18:01:08 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Orion Poplawski 2026-10-28 01:27:26 UTC
This appears to be about the conda repository, not the code.


Note You need to log in before you can comment on or make changes to this bug.