CVE-2026-40596

HIGH EPSS 34.0%
Published May 22, 20261mo ago · Modified Jun 17, 20262w ago
7.2 CVSS 4.0
High
Find Similar
Published May 22, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.11.0 through 2.28.1 allow any authenticated user to inject arbitrary HTML by updating their account's font family. Upon exploitation, an XSS payload would be reflected on every MantisBT page. Leveraging another vulnerability (CSP bypass, see GHSA-9c3j-xm6v-j7j3), the attacker could achieve account takeover. This issue has been fixed in version 2.28.2.

CVSS Details

Base Score
7.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:L/VA:L/SC:H/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
34.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 5

  • github.com https://github.com/mantisbt/mantisbt/commit/9e8409cdd979eba86ef532756fc47c1d8112d22d
  • github.com https://github.com/mantisbt/mantisbt/security/advisories/GHSA-9c3j-xm6v-j7j3
  • github.com https://github.com/mantisbt/mantisbt/security/advisories/GHSA-j3v9-553h-x28j
  • mantisbt.org https://mantisbt.org/bugs/view.php?id=37011
  • mantisbt.org https://mantisbt.org/bugs/view.php?id=37016

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.