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TI-2026-25913 Aliases CVE-2026-33517GHSA-fh48-f69w-7vmp

MantisBT Vulnerable to Stored HTML Injection in Tag Delete Confirmation

Priority LOW 39CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00247 16th percentileScored 2026-11-07
Fix Fixed mantisbt/mantisbt (Packagist): 2.28.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
mantisbtmantisbt= 2.28.0—No fix listedCNA
—mantisbt/mantisbt (Packagist)2.28.0 to before 2.28.12.28.1Patch availableGHSA-fh48-f69w-7vmp
  • mantisbt Vendormantisbt Affected = 2.28.0 Fixed in — No fix listed CNA
  • mantisbt/mantisbt (Packagist) Vendor— Affected 2.28.0 to before 2.28.1 Fixed in 2.28.1 Patch available GHSA-fh48-f69w-7vmp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mantisbt:mantisbt:2.28.0:*:*:*:*:*:*:*2.28.0Vulnerablemantisbt
  • cpe:2.3:a:mantisbt:mantisbt:2.28.0:*:*:*:*:*:*:* Versions 2.28.0 Vulnerable ·mantisbt

Remediation

  • Fix · GHSA-fh48-f69w-7vmp mantisbt/mantisbt (Packagist) Fixed in 2.28.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33517
  2. 2026-10-03 Alias added: GHSA-fh48-f69w-7vmp

References

Patch 3

Advisory 1

Other 2

  • TI-2017-05251 MantisBT through 2.3.0 allows arbitrary password reset and unauthenticated admin access… CVSS 3.1HIGH 8.8
  • TI-2014-05966 The XmlImportExport plugin in MantisBT 1.2.17 and earlier allows remote attackers to… CVSS 2.0HIGH 7.5
  • TI-2025-38760 MantisBT unauthorized disclosure of private project column configuration CVSS 4.0MEDIUM 5.3
  • TI-2017-04981 A cross-site scripting (XSS) vulnerability in the MantisBT Configuration Report page… CVSS 3.0MEDIUM 4.8
  • TI-2019-11797 MantisBT before 1.3.20 and 2.22.1 allows Post Authentication Command Injection, leading to Remote Code Execution. CVSS 3.1HIGH 7.2
  • TI-2014-07063 The XML Import/Export plugin in MantisBT 1.2.x does not restrict access, which allows… CVSS 2.0MEDIUM 6.4
See all 121 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences