#VU119223 Authorization bypass through user-controlled key in Talk - CVE-2025-66556

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Main Vulnerability Database Vulnerabilities #VU119223

#VU119223 Authorization bypass through user-controlled key in Talk - CVE-2025-66556

Published: December 5, 2025


Vulnerability identifier: #VU119223
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2025-66556
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Talk
Software vendor:
Nextcloud

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to authorization bypass through user-controlled key. A remote user can delete poll drafts of other participants within the conversation based on their numeric ID.


Remediation

Install updates from vendor's website.

External links