Security Vulnerabilities
QuickCMS is vulnerable to multiple Stored XSS in language editor functionality (languages). Malicious attacker with admin privileges can inject arbitrary HTML and JS into website, which will be rendered/executed on every page. By default admin user is not able to add JavaScript into the website.
The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.8 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
CVSS Score
4.8
EPSS Score
0.0
Published
2025-11-14
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to sanitize user data which allows system administrators to access password hashes and MFA secrets via the POST /api/v4/users/{user_id}/email/verify/member endpoint
CVSS Score
4.9
EPSS Score
0.0
Published
2025-11-14
Mattermost versions <11.0 fail to properly enforce the "Allow users to view archived channels" setting which allows regular users to access archived channel content and files via the "Open in Channel" functionality from followed threads
CVSS Score
3.1
EPSS Score
0.0
Published
2025-11-14
Mattermost versions <11 fail to enforce multi-factor authentication on WebSocket connections which allows unauthenticated users to access sensitive information via WebSocket events
CVSS Score
6.5
EPSS Score
0.001
Published
2025-11-14
Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11, 10.12.x <= 10.12.0 fail to validate the relationship between the post being updated and the MSTeams plugin OAuth flow which allows an attacker to edit arbitrary posts via a crafted MSTeams plugin OAuth redirect URL.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-11-14
Mattermost versions <11 fail to properly restrict access to archived channel search API which allows guest users to discover archived public channels via the `/api/v4/teams/{team_id}/channels/search_archived` endpoint
CVSS Score
4.3
EPSS Score
0.0
Published
2025-11-14
Out of bounds read in V8 in Google Chrome prior to 133.0.6943.141 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Medium)
CVSS Score
4.3
EPSS Score
0.001
Published
2025-11-14
Inappropriate implementation in DevTools in Google Chrome prior to 136.0.7103.59 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
CVSS Score
5.4
EPSS Score
0.0
Published
2025-11-14
Inappropriate implementation in WebApp Installs in Google Chrome on Android prior to 134.0.6998.35 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
CVSS Score
4.3
EPSS Score
0.001
Published
2025-11-14
Inappropriate implementation in Compositing in Google Chrome prior to 140.0.7339.80 allowed a remote attacker to perform UI spoofing via a crafted HTML page. (Chromium security severity: Low)
CVSS Score
4.3
EPSS Score
0.001
Published
2025-11-14