GHSA-fvjf-68wh-rwp2
MantisBT is Vulnerable to Stored HTML Injection/XSS in Clone Issue Form
Quick fix
GHSA-fvjf-68wh-rwp2 — mantisbt/mantisbt: upgrade to the fixed version with the command below.
composer require mantisbt/mantisbt:^2.28.2Details
When cloning an issue originating from a Project other than the current one, the clone form (bug_report_page.php) prepends the source Project name before the category selector without proper escaping, allowing an attacker able to to inject HTML if they can set the Project's name (which typically requires *manager* or *administrator* access level).
### Impact Cross-site scripting (XSS). This is mitigated by Content Security Policy which restricts scripts execution.
### Patches - df22697ae497ddd93f3d9132fdf4979db8d081cd
### Workarounds Make sure Project names do not contain any HTML tags.
### Credits Thanks to Vishal Shukla for discovering and responsibly reporting the issue.
The vulnerability was also identified and independently reported by @siunam321 (Tang Cheuk Hei), prior to this Advisory's publication.
Are you affected?
Enter the version of the package you're using.
Affected packages
0Fixed in: 2.28.2composer require mantisbt/mantisbt:^2.28.2References
- https://github.com/mantisbt/mantisbt/security/advisories/GHSA-fvjf-68wh-rwp2[WEB]
- https://nvd.nist.gov/vuln/detail/CVE-2026-34463[ADVISORY]
- https://github.com/mantisbt/mantisbt/commit/df22697ae497ddd93f3d9132fdf4979db8d081cd[WEB]
- https://github.com/mantisbt/mantisbt[PACKAGE]
- https://mantisbt.org/bugs/view.php?id=36986[WEB]