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
Published
2026-05-11T19:39:31Z
Modified
2026-09-10T03:50:47Z
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 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.

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 
{
    "cwe_ids": [
        "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T19:39:31Z",
    "nvd_published_at": "2026-05-28T21:16:29Z",
    "severity": "MODERATE"
}
References

Affected packages

Packagist / mantisbt/mantisbt

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown 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

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