{"id":"CVE-2026-53942","title":"Conda Organization Infrastructure: Pwn Request in update workflow allows PR-controlled template rendering with SYNC_TOKEN","summary":"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/workflow…","severity":"critical","cvss":9.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L","cvssSource":"cna","cwe":["CWE-94"],"vendor":"conda","product":"infrastructure","affected":["infrastructure < 9c0f23857282ff5cf7a6b3ad6bf0dd6f9974be55"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-23T14:54:29.744728Z"},"published":"2026-10-23","updated":"2026-10-23","sourceUpdated":"2026-10-23T14:57:32.991Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-53942","references":[{"url":"https://github.com/conda/infrastructure/security/advisories/GHSA-pf87-fcg3-wjfh","label":"https://github.com/conda/infrastructure/security/advisories/GHSA-pf87-fcg3-wjfh"},{"url":"https://github.com/conda/infrastructure/commit/9c0f23857282ff5cf7a6b3ad6bf0dd6f9974be55","label":"https://github.com/conda/infrastructure/commit/9c0f23857282ff5cf7a6b3ad6bf0dd6f9974be55"}],"tags":["cve.org"],"ingestedAt":"2026-10-23T14:28:08.689Z","slug":"CVE-2026-53942","body":"## Overview\n\nConda 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.\n\n## Affected\n\n- `infrastructure < 9c0f23857282ff5cf7a6b3ad6bf0dd6f9974be55`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":54.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}