p PatchFirst

CVE-2026-58270

CVE-2026-58270 · Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff `pathFilters`

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, the sync diff endpoint compiles a user-supplied string into a `RegExp` with no complexity validation. A catastrophic-backtracking pattern (e.g. `^(a+)+b`) blocks the Node.js event loop, making the entire server unresponsive to all users until the container is restarted. Version 2.4.0 patches the issue.

CVSS 6.5 · Medium · EPSS 0.4% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • server

    Versions
    • < 2.4.0: Affected

    No fix published

  • @sync-in/server npm

    Affected ranges
    • SEMVER: < 2.4.0

    Update to 2.4.0

Original sources

Check your server →