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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
the-40-thieves:obsidian-tc
References 4
https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-cvp8-vvg…
https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-cvp8-vvgf-69q4
https://github.com/The-40-Thieves/obsidian-tc/pull/73
https://github.com/The-40-Thieves/obsidian-tc/pull/73
https://github.com/The-40-Thieves/obsidian-tc/commit/74de320ddea855e1dec47d67be…
https://github.com/The-40-Thieves/obsidian-tc/commit/74de320ddea855e1dec47d67beabe88491149dab
https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1
https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1