CVE Catalog

CVE-2026-82980

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

11th percentile - higher than 11% of all known CVEs

Summary

Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables cross-user manual locks (blocking writes such as PUT/MOVE/DELETE and editor saves) and lock-token disclosure, allowing attackers to remove token-based locks of other users.

Risk Assessment

An attacker can block writes to a victim's files and obtain lock tokens enabling removal of other users' locks. This leads to disruption of operations and data integrity violations.

Recommendation

Upgrade the DAV plugin to a version that verifies the request path matches the authenticated user. Until then, monitor for unusual lock operations on other users' paths.

Related vulnerabilities

Original NVD description (English source)

Any authenticated user can lock or unlock files they do not own by targeting absolute WebDAV paths of other users. The DAV plugin resolves files from the absolute request URI without verifying that the path segment matches the authenticated session user. This enables: Cross-user manual locks : attacker locks a victim's files, blocking writes (PUT/MOVE/DELETE, editor saves). Lock-token disclosure: the app returns the lock token to unauthorized callers, enabling them to remove token-based locks (client locks) of other users.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS