GHSA-h4x5-gvx6-3rwc

Suggest an improvement
Source
https://github.com/advisories/GHSA-h4x5-gvx6-3rwc
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-h4x5-gvx6-3rwc/GHSA-h4x5-gvx6-3rwc.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-h4x5-gvx6-3rwc
Aliases
  • CVE-2026-34754
Published
2026-05-11T19:33:06Z
Modified
2026-05-11T19:48:59.013368Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
MantisBT has an Authorization Bypass that Allows Uploading Attachments to Private Issues via REST API
Details

Impact

MantisBT allows an authenticated user to upload attachments to private Issues they are not authorized to access.

Patches

  • b262b4d2835b81394d75356dead66e52a6275206

Workarounds

None.

Credits

Thanks to Vishal Shukla for discovering and responsibly reporting the issue.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T19:33:06Z",
    "cwe_ids": [
        "CWE-284"
    ],
    "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-h4x5-gvx6-3rwc/GHSA-h4x5-gvx6-3rwc.json"
last_known_affected_version_range 
"<= 2.28.1"