CVE-2026-34463

HIGH EPSS 35.5%
Published May 19, 20261mo ago · Modified Jun 17, 20262w ago
8.6 CVSS 4.0
High
Find Similar
Published May 19, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior contain a Stored XSS vulnerability. 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). This issue has been resolved in version 2.28.2.

CVSS Details

Base Score
8.6
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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 High
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
35.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 3

  • github.com https://github.com/mantisbt/mantisbt/commit/df22697ae497ddd93f3d9132fdf4979db8d081cd
  • github.com https://github.com/mantisbt/mantisbt/security/advisories/GHSA-fvjf-68wh-rwp2
  • mantisbt.org https://mantisbt.org/bugs/view.php?id=36986

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.