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.

INFO

Published Date :

2025-12-05T17:56:44.463Z

Last Modified :

2025-12-05T18:09:34.326Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2025-66556 vulnerability.

Vendors Products
Nextcloud
  • Talk
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-66556.

URL Resource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pr9f-vqgg-m2jh cve-icon cve-icon
https://github.com/nextcloud/spreed/commit/bd68e80d1dea98d84c1d621c2c681238cf041725 cve-icon cve-icon
https://github.com/nextcloud/spreed/pull/15532 cve-icon cve-icon
https://hackerone.com/reports/3247386 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact