GHSA-c5xx-h28h-f682MediumCVSS 4.7
obsidian-tc : Symlink read-ACL scope bypass via lexical path checks
🔗 CVE IDs covered (1)
📋 Description
Impact
ACL checks ran on the lexical vault-relative path while containment used the realpath. An in-vault symlink placed under an allowed glob, whose realpath resolved into a denied folder, passed the read ACL — an intra-vault read-ACL-scope bypass. It requires an out-of-band-planted symlink (no MCP tool creates one) and is not a vault-root escape.
Patches
Fixed in 1.3.1. Upgrade to >= 1.3.1. ACL enforcement now derives the realpath vault-relative path and feeds a single unified predicate at every site.
Workarounds
Do not permit untrusted symlinks inside the vault.
🎯 Affected products1
- npm/obsidian-tc:< 1.3.1
🔗 References (6)
- 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
- https://github.com/advisories/GHSA-c5xx-h28h-f682