CVE-2026-33517
MEDIUMMantisBT Vulnerable to Stored HTML Injection in Tag Delete Confirmation
Title source: cnaDescription
Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, when deleting a Tag (tag_delete.php), improper escaping of its name when displaying the confirmation message allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript. Version 2.28.1 fixes the issue. Workarounds include reverting commit d6890320752ecf37bd74d11fe14fe7dc12335be9 and/or manually editing language files to remove the sprintf placeholder `%1$s` from `$s_tag_delete_message` string.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-fh48-f69w-7vmp
X_Refsource_Misc x_refsource_misc
https://github.com/mantisbt/mantisbt/commit/80990f43153167c73f11eb4b2bc7108d0c3d6b46
X_Refsource_Misc x_refsource_misc
https://github.com/mantisbt/mantisbt/commit/d6890320752ecf37bd74d11fe14fe7dc12335be9
Scores
CVSS v3
6.1
EPSS
0.0024
EPSS Percentile
15.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (3)
mantisbt/mantisbt
2.28.0
mantisbt/mantisbt
2.28.0 - 2.28.1Packagist
mantisbt/mantisbt
= 2.28.0
Published
Mar 23, 2026
Tracked Since
Mar 24, 2026