GHSA-c5xx-h28h-f682
obsidian-tc : Symlink read-ACL scope bypass via lexical path checks
At a glance
- Published
- Updated
- CVE
- CVE-2026-77361
- CVSS_V3
- CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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 packages
| Package | Versions |
|---|---|
| npm · obsidian-tc | introduced 0, fixed 1.3.1 |
References
- https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-c5xx-h28h-f682 WEB
- https://github.com/The-40-Thieves/obsidian-tc/pull/76 WEB
- https://github.com/The-40-Thieves/obsidian-tc/commit/c81d1687e2cfec98a0d8bc5038c029f41ea9c920 WEB
- https://github.com/The-40-Thieves/obsidian-tc PACKAGE
- https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1 WEB
- https://nvd.nist.gov/vuln/detail/cve-2026-77361 ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |