{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "= 2.28.0"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "75ed0962f60435d222a04343e60ba319e12093fd"
            }
          ],
          "repo": "https://github.com/mantisbt/mantisbt",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-73vx-49mv-v8w5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33548.json"
  },
  "details": "Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, improper escaping of tag names retrieved from History in Timeline (my_view_page.php) allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript, when displaying a tag that has been renamed or deleted. Version 2.28.1 contains a patch. Workarounds include editing offending History entries (using SQL) and wrapping `$this-\u003etag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html().",
  "id": "CVE-2026-33548",
  "modified": "2026-04-01T23:08:58.126774623Z",
  "published": "2026-03-23T19:15:18.891Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33548.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/mantisbt/mantisbt/commit/f32787c14d4518476fe7f05f992dbfe6eaccd815"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-73vx-49mv-v8w5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33548"
    }
  ],
  "schema_version": "1.7.3",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MantisBT has Stored HTML Injection / XSS when displaying Tags in Timeline"
}