CVE Catalog

CVE-2025-66556

LowCVSS 3.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.25%

16th percentile - higher than 16% of all known CVEs

Summary

In Nextcloud Talk 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.

Risk Assessment

A conversation participant can delete other users' poll drafts without authorization, causing data loss and disruption of team workflows. The risk is limited to users with active chat permissions.

Recommendation

Update Nextcloud Talk to version 20.1.8 or 21.1.2 (or later). Until then, consider restricting chat permissions for less trusted participants.

Related vulnerabilities

Original NVD description (English source)

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.

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