GHSA-pq86-j2c2-47f6

Suggest an improvement
Source
https://github.com/advisories/GHSA-pq86-j2c2-47f6
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-pq86-j2c2-47f6/GHSA-pq86-j2c2-47f6.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-pq86-j2c2-47f6
Aliases
  • CVE-2026-42070
Published
2026-05-11T19:39:31Z
Modified
2026-05-11T19:48:53.173758Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
MantisBT: Authorization Bypass in Bugnote Editing via Issue Update API
Details

The mcissueupdate() function in MantisBT allows users having updatebugthreshold 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 mcissuenote_update() function.

Impact

  1. UPDATER can edit notes by DEVELOPER/MANAGER/ADMIN — bypassing the DEVELOPER threshold
  2. UPDATER can change private notes to public — exposing confidential internal discussion
  3. UPDATER can change public notes to private — hiding information from reporters/viewers

Patches

  • 6e58fae4f22efdc3987f903c8ba2611de17a9435

Workarounds

None

Credits

Thanks to the following security researchers for independently discovering and responsibly reporting the issue. - Vishal Shukla - Tristan Madani (@TristanInSec) from Talence Security

This advisory's contents was largely copied from Tristan's well-written report.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T19:39:31Z",
    "cwe_ids": [
        "CWE-863"
    ],
    "severity": "MODERATE",
    "nvd_published_at": null
}
References

Affected packages

Packagist / mantisbt/mantisbt

Package

Name
mantisbt/mantisbt
Purl
pkg:composer/mantisbt/mantisbt

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.28.2

Affected versions

2.*
2.3.0
2.3.1
2.3.2
2.3.3
2.4.0
2.4.1
2.4.2
2.5.0
2.5.1
2.5.2
2.6.0
2.7.0
2.7.1
2.8.0
2.8.1
2.9.0
2.9.1
2.10.0
2.10.1
2.11.0
2.11.1
2.12.0
2.12.1
2.12.2
2.13.0
2.13.1
2.13.2
2.14.0
2.15.0
2.15.1
2.16.0
2.16.1
2.17.0
2.17.1
2.17.2
2.18.0
2.18.1
2.19.0
2.19.1
2.20.0
2.20.1
2.21.0
2.21.1
2.21.2
2.21.3
2.22.0
2.22.1
2.22.2
2.23.0
2.23.1
2.24.0
2.24.1
2.24.2
2.24.3
2.24.4
2.24.5
2.25.0
2.25.1
2.25.2
2.25.3
2.25.4
2.25.5
2.25.6
2.25.7
2.25.8
2.26.0
2.26.1
2.26.2
2.26.3
2.26.4
2.27.0
2.27.1
2.27.2
2.27.3
2.28.0
2.28.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-pq86-j2c2-47f6/GHSA-pq86-j2c2-47f6.json"
last_known_affected_version_range 
"<= 2.28.1"