cvedb.io
CVE-2026-39960
MEDIUM · CVSS 5.4
EPSS exploitation probability: 0%
Published 2026-05-20T22:16:36.563 · Last modified 2026-06-17T10:42:49.010

Summary

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and below contain flawed logic that causes improper escaping of a textarea custom field's contents in the Update Issue page, (bug_update_page.php) allowing an attacker to inject HTML and, if CSP settings permit, execute arbitrary JavaScript when the page is loaded. This facilitates session theft, leading to admin account takeover, full project data access. In order to exploit this issue, a textarea-type custom field must be configured for the project, the attack must be carried out by an authenticated user with bug report permission (low privilege). This can affect any user viewing the bug edit form, including administrators. The issue has been fixed in version 2.28.2. If users cannot immediately upgrade, they c

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.