CVE-2026-77361Hinoki check available

File disclosure via lexical-path symlink ACL bypass

Published Oct 13, 2026 · Updated Oct 13, 2026

Read-ACL bypass in The-40-Thieves obsidian-tc before 1.3.1 allows local users to read denied vault files via an allowed-path symlink. Read authorization checks the lexical vault-relative path while containment checks the resolved path, so a link under an allowed glob passes authorization even when its target is in a denied folder. Exploitation requires an out-of-band-planted symlink that no MCP tool creates; disclosure remains inside the vault root.

CVSS severity4.7
Medium
EPSS probability0.11%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Read-ACL bypass in The-40-Thieves obsidian-tc before 1.3.1 allows local users to read denied vault files via an allowed-path symlink. Read authorization checks the lexical vault-relative path while containment checks the resolved path, so a link under an allowed glob passes authorization even when its target is in a denied folder. Exploitation requires an out-of-band-planted symlink that no MCP tool creates; disclosure remains inside the vault root.

The record

CVE
CVE-2026-77361
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
The-40-Thieves
Product
obsidian-tc
Classifications
CWE-863, CWE-59, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.3.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The-40-Thieves · obsidian-tcversion=< 1.3.1

Published CVSS scores

4.7The-40-ThievesCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-59Improper Link Resolution Before File Access ('Link Following')
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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