CVE-2026-77364obsidian-tc fail-open default ACL exposes Obsidian control-directory secrets
Updated under an hour ago ()
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It affects The-40-Thieves obsidian-tc. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, undefined readPaths and writePaths settings allow all paths, strictReadDefault does not protect direct requests, and the .obsidian, .git, and .trash control directories are excluded only during enumeration. An authenticated caller can directly read sensitive files such as .obsidian/plugins/*/data.json, potentially exposing plugin API keys, Obsidian Sync passwords, and other in-vault data. Version 1.3.1 fixes the vulnerability by denying the control directories by default and enforcing strictReadDefault on direct request paths.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-200, CWE-276
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 12, 2026
Affected products
The-40-Thieves obsidian-tc 40_thieves:obsidian_tc (from the name) | before 1.3.1 | CNA record |
References
- https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-cvp8-vvgf-69q4x-refsource-confirm
- https://github.com/The-40-Thieves/obsidian-tc/pull/73x-refsource-misc
- https://github.com/The-40-Thieves/obsidian-tc/commit/74de320ddea855e1dec47d67beabe88491149dabx-refsource-misc
- https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.