CVE-2021-39222 describes a stored Cross-Site Scripting (XSS) vulnerability in the Nextcloud Talk application, affecting versions prior to 10.0.7, 10.1.4, 11.1.2, 11.2.0, and 12.0.0. The vulnerability, rated Medium (CVSS 6.1), requires user interaction (right-clicking a malicious file and opening it in a new tab) but is mitigated by Nextcloud's Content-Security-Policy on modern browsers. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion, indicating low current threat activity.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.0.7CPE matchmatch criteria | cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:* | ||
>= 10.1.0, < 10.1.4CPE matchmatch criteria | cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:* | ||
>= 11.0.0, < 11.1.2CPE matchmatch criteria | cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.