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CVE-2025-66556

nvd nist
Published: Dec 5, 2025Modified: Jun 17, 2026

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4.3
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Exploitability: 2.8 / Impact: 1.4
Source: NVD

Description

Nextcloud talk is a video & audio conferencing app for Nextcloud. Prior to 20.1.8 and 21.1.2, a participant with chat permissions was able to delete poll drafts of other participants within the conversation based on their numeric ID. This vulnerability is fixed in 20.1.8 and 21.1.2.

Affected (2)

Products: Nextcloud: Talk
Nextcloud
1 product
Talk
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Nextcloud
Talk
From 20.0.0 to 20.1.8
Talk
From 21.0.0 to 21.1.2

Related CWEs

CWE-639
Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

References (4)

Source: security-advisories@github.com
PatchVendor Advisory
Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Issue TrackingPatch
Source: security-advisories@github.com
Issue TrackingVendor Advisory

Timeline

No history available yet.