CVE-2025-13523 is a cross-site scripting (XSS) vulnerability affecting Mattermost Confluence plugin versions prior to 1.7.0. An authenticated Confluence user can exploit this by crafting a malicious display name that, when rendered via a specially designed OAuth2 connection link, executes arbitrary JavaScript in a victim's browser. This vulnerability has a CVSS score of 5.4 (Medium) due to its network attack vector, low attack complexity, and potential for low impact on confidentiality and integrity. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.0, < 1.7.0CPE matchmatch criteria | cpe:2.3:a:mattermost:confluence:*:*:*:*:*:mattermost:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.