CRITICALCVSS v3.1 9.9Vulnerability

CVE-2026-53942

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.

Properties

Severity
CRITICAL
Nvd fetched at
2026-10-23T18:28:27.485228+00:00
Cvss severity
CRITICAL
Cvss score
9.9
Retrieved at
2026-10-23T18:30:16+00:00
Score
9.9
Cvss version
3.1
Last source
NVD
Cve id
CVE-2026-53942
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
First seen by Signal
2026-10-23T18:30:16+00:00
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Published at
2026-10-23T15:17:32.157
Last modified
2026-10-23T15:17:32.157

Related Entities (1)

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CVE-2026-53942 (CVSS v3.1 9.9) — Ninja Signal Threat Intelligence | Ninja Signal