CVE-2026-79773
Description
Winter CMS before 1.2.13 contains a local file inclusion vulnerability in the JavascriptImporter filter that allows authenticated users with cms.manage_assets permission to disclose arbitrary server-readable files by placing =include or =require directives in theme JavaScript assets. Attackers can reference files like .env outside the theme directory, and the combined output served through the combine route becomes readable by unauthenticated visitors, exposing application keys and database credentials.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/wintercms/winter/commit/e09c8d3526f3583cb6c3476a021b885088ecd4bd
- https://github.com/wintercms/winter/commit/fd673f4f32140c97c68b1ed705764b819747fbdf
- https://github.com/wintercms/winter/security/advisories/GHSA-2223-f22x-24cq
- https://www.vulncheck.com/advisories/winter-cms-before-local-file-inclusion-via-javascript
CWEs
CWE-22
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.