Actual Sync Server: CORS Proxy GitHub API Allowlist Prefix Bypass Leaks Private Repositories Through the Server GitHu...
High-risk advisory
CVE-2026-57449
Summary
Actual Sync Server: CORS Proxy GitHub API Allowlist Prefix Bypass Leaks Private Repositories Through the Server GitHub Token
Why it matters
GitHub has published a reviewed security advisory for @actual-app/sync-server. Prioritize it with other application dependency updates, especially because EPSS places it in the 10% percentile.
Operator check
Check whether @actual-app/sync-server is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 7.1. EPSS probability: 0.2%; percentile: 10%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.