GHSA-v84x-qvhg-f36r

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Source
https://github.com/advisories/GHSA-v84x-qvhg-f36r
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-v84x-qvhg-f36r/GHSA-v84x-qvhg-f36r.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-v84x-qvhg-f36r
Aliases
  • CVE-2026-49273
Published
2026-07-15T16:52:24Z
Modified
2026-07-15T17:11:43Z
Severity
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
MantisBT: Remote Code Execution via eval() Class Hoisting in adm_config_set.php
Details

MantisBT 2.28.3 and earlier contains a remote code execution vulnerability in the admin "Manage Configuration" feature (adm_config_set.php). When setting a configuration value with a non-string type (integer, float, complex), the value is passed through ConfigParser -> Tokenizer, which calls eval() with a return; prefix intended to prevent code execution.

However, PHP hoists function and class declarations at compile time, even past a return statement. An attacker can define a class in the eval()'d code that hijacks a class loaded later via PHP's autoloader, achieving arbitrary code execution.

This vulnerability requires administrator access to the web UI (adm_config_set.php). The REST API's ConfigsSetCommand does NOT use Tokenizer/eval() and is not affected.

Impact

  • Remote code execution as the web server user (www-data) from an authenticated administrator session

Patches

Workarounds

None.

Resources

Credits

McCaulay Hudson (@_McCaulay) of watchTowr

Database specific 
{
    "cwe_ids": [
        "CWE-95"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-15T16:52:24Z",
    "nvd_published_at": null,
    "severity": "HIGH"
}
References

Affected packages

Packagist / mantisbt/mantisbt

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
1.3.0
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-v84x-qvhg-f36r/GHSA-v84x-qvhg-f36r.json"