VulnerabilityAnalyzed
CVE-2025-66556
This vulnerability is fixed in 20.1.8 and 21.1.2.
MEDIUM 4.3EPSS 0.25%
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Affected
- nextcloud/talk
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-pr9f-vqgg-m2jhPatch, Vendor Advisory
- https://github.com/nextcloud/spreed/commit/bd68e80d1dea98d84c1d621c2c681238cf041725Patch
- https://github.com/nextcloud/spreed/pull/15532Issue Tracking, Patch
- https://hackerone.com/reports/3247386Issue Tracking, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.