CVE-2026-77165
Received Received - Intake

TYPE_TOKEN Lock Bypass in File System

Publication date: 2026-09-21

Last updated on: 2026-09-21

Assigner: HackerOne

Description
File owners were unable to unlock TYPE_TOKEN locks placed by other users, leaving files permanently locked with no recovery path outside of the database.

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Meta Information

Published
2026-09-21
Last Modified
2026-09-21
Generated
2026-09-21
AI Q&A
2026-09-21
EPSS Evaluated
N/A
NVD
CVE-2026-77165
EUVD
EUVD-2026-83973

Affected Vendors & Products

Currently, no data is known.

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This vulnerability involves a lock mechanism where file owners cannot remove TYPE_TOKEN locks created by other users. This results in files being permanently locked with no way to recover access outside of the database.

Impact Analysis

The impact includes potential permanent loss of access to critical files if they are locked by another user. This could disrupt operations, cause data unavailability, and require database intervention for recovery.

Compliance Impact

This vulnerability could impact compliance with standards like GDPR and HIPAA by potentially causing unauthorized data access or integrity issues due to permanently locked files. Unrecoverable file locks may lead to data availability problems, which could violate requirements for timely access or integrity of sensitive information.

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