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Vulnerabilities

Security incident · CVE-2026-77362

obsidian-tc Bridge tools leak denied-note data via unfiltered sibling fields

Published Oct 13, 2026 · catalog updated Oct 23, 2026 · The-40-Thieves

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-77362. EPSS is 0.20%. Act only if a listed version of The-40-Thieves is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.20%
Remediation
Version ranges on file
Affected products
npm obsidian-tc · vendor The-40-Thieves obsidian-tc

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm obsidian-tc< 1.3.1
  • vendor The-40-Thieves obsidian-tcversion unspecified

How to fix CVE-2026-77362

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-77362. EPSS is 0.20%. Act only if a listed version of The-40-Thieves is installed.

Which versions are affected?

Compare what you have installed with < 1.3.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-200: Exposure of Sensitive Information; CWE-863: Incorrect Authorization. EPSS 0.20%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 23, 2026 · GitHub Advisory Database

    Detected

    ### Impact Bridge tool results filtered only the array against the read ACL and passed sibling fields through unfiltered: emitted whose counts reflected denied notes, returned siblings, and enumerated Templater template paths and parsed user-function bodies with no read-whitelist gate. A caller could infer or read data from notes outside its read ACL. ### Patches Fixed in **1.3.1**. Upgrade to . A

Sources

  • CVE.orgVulnerability recordCVE-2026-77362

    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, makem

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-77362

    30-day exploitation probability 0.20%

    first.org
  • GitHub Advisory DatabasePackage advisoryGHSA-43r2-c7g8-prc8

    obsidian-tc Bridge tools leak denied-note data via unfiltered sibling fields

    github.com
  • GitLab Advisory DatabasePackage advisoryCVE-2026-77362

    Bridge tool results filtered only the items array against the read ACL and passed sibling fields through unfiltered: tasks_filter emitted groups whose counts reflected denied notes, makemd_query returned &hellip;result siblings, and list_templates enumerated Templater template paths and parsed user-function bodies with no read-whitelist gate. A caller could infer or read data from notes outside it

    advisories.gitlab.com

References

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 25, 2026
  • GitLab Advisory DatabaseOct 25, 2026
  • CVE.orgOct 23, 2026
  • GitHub Advisory DatabaseOct 23, 2026