CVE-2026-77361
CVE-2026-77361 · obsidian-tc symlink path mismatch bypasses read ACL restrictions
This page contains facts from public vulnerability sources. Check the original advisory before updating.
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, read access-control list (ACL) checks use a lexical vault-relative path while containment checks use the resolved path. An in-vault symlink under an allowed glob that resolves into a denied folder can therefore bypass the read ACL and expose files in the denied folder. Exploitation requires an out-of-band-planted symlink and does not permit an escape from the vault root. Version 1.3.1 fixes the vulnerability by applying ACL checks to the resolved vault-relative path.
CVSS 4.7 · Medium · EPSS 0.1% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
obsidian-tc
- Versions
- < 1.3.1: Affected
No fix published
obsidian-tc npm
- Affected ranges
- SEMVER: < 1.3.1
Update to 1.3.1
Original sources
- https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682
- https://github.com/The-40-Thieves/obsidian-tc/pull/76
- https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920
- https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-77361