{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.28.3"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "mantisbt/mantisbt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.3.0"
            },
            {
              "fixed": "2.28.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49273"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-95"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-15T16:52:24Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "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 -\u003e Tokenizer, which calls *eval()* with a `return;` prefix intended to prevent code execution.\n\nHowever, PHP hoists function and class declarations at compile time, even past a *return* statement. An attacker can define a class in the eval()\u0027d code that hijacks a class loaded later via PHP\u0027s autoloader, achieving arbitrary code execution.\n\nThis vulnerability requires administrator access to the web UI (adm_config_set.php). The REST API\u0027s ConfigsSetCommand does NOT use Tokenizer/eval() and is not affected.\n\n### Impact\n- Remote code execution as the web server user (www-data) from an authenticated administrator session\n\n### Patches\n- https://github.com/mantisbt/mantisbt/commit/78c0af63d1fe0118004744cab21ca3bf2cea0f5c\n\n### Workarounds\nNone. \n\n### Resources\n- https://mantisbt.org/bugs/view.php?id=37122\n\n### Credits\nMcCaulay Hudson (@_McCaulay) of watchTowr",
  "id": "GHSA-v84x-qvhg-f36r",
  "modified": "2026-07-15T16:52:24Z",
  "published": "2026-07-15T16:52:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-v84x-qvhg-f36r"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/commit/78c0af63d1fe0118004744cab21ca3bf2cea0f5c"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mantisbt/mantisbt"
    },
    {
      "type": "WEB",
      "url": "https://mantisbt.org/bugs/view.php?id=37122"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MantisBT: Remote Code Execution via eval() Class Hoisting in adm_config_set.php"
}