GitStock

mantisbt/mantisbt · Security

MantisBT has Stored HTML Injection/XSS when displaying Tags in Timeline

Open GitHub
GHSA ID
GHSA-73vx-49mv-v8w5
CVE ID
CVE-2026-33548
Severity
high
Published
Updated
CVSS
6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v3
6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4
8.6 · 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

Description

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.

CWEs

  • CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References