-40-Thieves obsidian-tc up to 1.3.0 tasks_filter/makemd_query/list_templates privileges management

Summaryinfo

A vulnerability labeled as problematic has been found in -40-Thieves obsidian-tc up to 1.3.0. This affects the function tasks_filter/makemd_query/list_templates. Executing a manipulation can lead to privileges management. This vulnerability is registered as CVE-2026-77362. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic was found in -40-Thieves obsidian-tc up to 1.3.0. This vulnerability affects the function tasks_filter/makemd_query/list_templates. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality. CVE summarizes:

obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-77362 since 08/20/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 1.3.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-98689). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• -40-Thieves

Name

• obsidian-tc

Version

• 1.0
• 1.1
• 1.2
• 1.3.0

CPE 2.3info

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Once again VulDB remains the best source for vulnerability data.

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