TI-2026-30438 Aliases CVE-2026-42070 GHSA-pq86-j2c2-47f6

MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API

LOW 24CWE-863Published 2026-05-28 · Updated 2026-06-02

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, the mc_issue_update() function in MantisBT allows users having update_bug_threshold access (UPDATER, with default settings) to edit, change view state, and modify time tracking on bugnotes belonging to other users — bypassing the default DEVELOPER (level 55) threshold required by the dedicated mc_issue_note_update() function. This vulnerability is fixed in 2.28.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00258 17th 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

Vendor	Product	Affected versions	Fixed in	Status	Source
mantisbt	mantisbt	before 2.28.2	2.28.2	Patch available	CNA
—	mantisbt/mantisbt (Packagist)	before 2.28.2	2.28.2	Patch available	GHSA-pq86-j2c2-47f6

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-pq86-j2c2-47f6

CPE names Threatist (inferred) · 1

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

CPE	Versions	Role	Vendor
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-pq86-j2c2-47f6 mantisbt/mantisbt (Packagist) Fixed in 2.28.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-42070
2026-10-03 Alias added: GHSA-pq86-j2c2-47f6

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-42070

Other 5

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