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TI-2026-26988 Aliases CVE-2026-34744GHSA-rmp5-5jj7-gmvf

MantisBT authorization bypass allows continued access to self-uploaded attachments on private issues

Priority LOW 24CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior permit a user to list and download their own attachments from an Issue created by another user even after it becomes private, bypassing read access revocation. The loss of confidentiality caused by this vulnerability is minimal, considering that only attachments previously uploaded by the user themselves remain accessible. This issue has been fixed in version 2.82.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00362 30th percentileScored 2026-11-07
Fix Fixed mantisbt (mantisbt): 2.28.2mantisbt/mantisbt (Packagist): 2.28.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
mantisbtmantisbtbefore 2.28.22.28.2Patch availableCNA
—mantisbt/mantisbt (Packagist)before 2.28.22.28.2Patch availableGHSA-rmp5-5jj7-gmvf
  • mantisbt Vendormantisbt Affected before 2.28.2 Fixed in 2.28.2 Patch available CNA
  • mantisbt/mantisbt (Packagist) Vendor— Affected before 2.28.2 Fixed in 2.28.2 Patch available GHSA-rmp5-5jj7-gmvf

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:mantisbt:mantisbt:*:*:*:*:*:*:*:*——mantisbt
  • cpe:2.3:a:mantisbt:mantisbt:*:*:*:*:*:*:*:* Versions — — ·mantisbt

Remediation

  • Fix · CNA mantisbt (mantisbt) Fixed in 2.28.2
  • Fix · GHSA-rmp5-5jj7-gmvf mantisbt/mantisbt (Packagist) Fixed in 2.28.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34744
  2. 2026-10-03 Alias added: GHSA-rmp5-5jj7-gmvf

References

Advisory 1

Other 4

  • TI-2017-05251 MantisBT through 2.3.0 allows arbitrary password reset and unauthenticated admin access… CVSS 3.1HIGH 8.8
  • TI-2026-29334 MantisBT has Potential Referer-Based Reflected HTML Injection / XSS in Tag Update Page CVSS 4.0MEDIUM 6.9
  • TI-2014-05966 The XmlImportExport plugin in MantisBT 1.2.17 and earlier allows remote attackers to… CVSS 2.0HIGH 7.5
  • TI-2026-27192 MantisBT Bugnote Revision Page Leaks Private Issue Metadata After Issue Access Is Revoked CVSS 4.0MEDIUM 5.3
  • TI-2026-25495 MantisBT: Authorization Bypass in Global Profile Creation CVSS 4.0MEDIUM 5.3
  • TI-2026-26676 MantisBT: Privilege Escalation from Manager to Administrator CVSS 4.0MEDIUM 5.1
See all 144 →

Sources

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