GHSA-qj6w-v29q-4rgx
MantisBT is Vulnerable to Stored XSS in Custom Field Textarea Values
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | mantisbt/mantisbt | < 2.28.2 | 2.28.2 |
Details
As written in the advisory (Markdown source, shown as plain text).
Improper escaping of a textarea custom field's contents in the Update Issue page (bug_update_page.php) allows an attacker to inject HTML and, if CSP settings permit, execute arbitrary JavaScript when the page is loaded.
### Impact
Session theft leading to admin account takeover, full project data access.
- Precondition: A textarea-type custom field must be configured for the project
- Attacker: Authenticated user with bug report permission (low privilege)
- Victim: Any user viewing the bug edit form, including administrators
### Patches
- 5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7
### Workarounds
The default Content-Security Policy will block script execution.
### References
- https://mantisbt.org/bugs/view.php?id=37003
- This is related to [CVE-2024-34081](https://github.com/advisories/GHSA-wgx7-jp56-65mq).
### Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue, and providing a patch to fix it.
- Thanks to Nozomu Sasaki (Paul) (@morimori-dev)
- Tristan Madani (@TristanInSec) from Talence Security
References
External links from the advisory. They lead to third-party sites.