GHSA-77x8-3v3h-hrhv

Suggest an improvement
Source
https://github.com/advisories/GHSA-77x8-3v3h-hrhv
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-77x8-3v3h-hrhv/GHSA-77x8-3v3h-hrhv.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-77x8-3v3h-hrhv
Aliases
  • CVE-2026-52847
Published
2026-07-15T18:25:36Z
Modified
2026-07-15T18:41:49Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
MantisBT: Reflected XSS in admin/install.php
Details

MantisBT 2.28.3 and earlier contains six reflected XSS injection points in /admin/install.php. User-supplied parameters are echoed into HTML without escaping via print_test_result(). No authentication is required.

A Content Security Policy (script-src 'self') prevents inline JavaScript execution, but the CSP is missing a form-action directive, allowing exploitation via credential-phishing form injection and open redirects.

Impact

  • Credential phishing: Attacker crafts a URL that renders a fake login form on the real MantisBT admin page. Admin credentials are submitted to an attacker-controlled server.
  • Open redirect: Victim is silently redirected to a phishing or malware site.
  • UI manipulation: CSS injection can hide legitimate page content and overlay attacker-controlled HTML, enabling social engineering.

Patches

Workarounds

Remove the /admin directory, as recommended in the Admin Guide

Resources

Credits

McCaulay Hudson (@_McCaulay) of watchTowr

Database specific 
{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-15T18:25:36Z",
    "nvd_published_at":  null,
    "severity":  "CRITICAL"
}
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
2.28.4

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
2.28.2
2.28.3

Database specific

last_known_affected_version_range 
"<= 2.28.3"
source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-77x8-3v3h-hrhv/GHSA-77x8-3v3h-hrhv.json"