CVE-2026-44657CWE-79

MantisBT: Stored XSS in File Download

High · published May 28, 2026

CVSS v4.0
7.5
EPSS
1%
Percentile
47.0
In the wild
Unconfirmed
What it is

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, using show_inline=1 parameter and a valid file_show_inline_token CSRF token on file_download.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability is fixed in 2.28.2.

The record
Technical detail
CVSS v4.0
7.5 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
EPSS
0.00581 · 47.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-05-28T20:25Z
EPSS history
Timeline
  • 28 MAY 20:25Z
    MantisBT: Stored XSS in File Download
    cvelistv5