GHSA-73VX-49MV-V8W5

Vulnerability from github – Published: 2026-03-25 20:09 – Updated: 2026-03-25 20:09
VLAI?
Summary
MantisBT has Stored HTML Injection/XSS when displaying Tags in Timeline
Details

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.

Impact

Cross-site scripting (XSS).

Patches

f32787c14d4518476fe7f05f992dbfe6eaccd815

Workarounds

  • Edit offending History entries (using SQL)
  • Wrap $this->tag_name in a string_html_specialchars() call in IssueTagTimelineEvent::html()

Credits

MantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.

Severity ?
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
8.6 (High)
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
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "mantisbt/mantisbt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.28.0"
            },
            {
              "fixed": "2.28.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.28.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33548"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-03-25T20:09:09Z",
    "nvd_published_at": "2026-03-23T20:16:27Z",
    "severity": "HIGH"
  },
  "details": "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.\n\n### Impact\nCross-site scripting (XSS).\n\n### Patches\nf32787c14d4518476fe7f05f992dbfe6eaccd815\n\n### Workarounds\n* Edit offending History entries (using SQL)\n* Wrap `$this-\u003etag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html()\n\n### Credits\nMantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.",
  "id": "GHSA-73vx-49mv-v8w5",
  "modified": "2026-03-25T20:09:09Z",
  "published": "2026-03-25T20:09:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-73vx-49mv-v8w5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33548"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/commit/f32787c14d4518476fe7f05f992dbfe6eaccd815"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mantisbt/mantisbt"
    },
    {
      "type": "WEB",
      "url": "https://mantisbt.org/bugs/view.php?id=36973"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "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"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.