CVE-2021-33557
MantisBT allows XSS in manage_custom_field_edit_page.php
6.1
MEDIUM
CVSS 3.1
EPSS 0.93%
Description
An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.
How to fix CVE-2021-33557
To remediate CVE-2021-33557, upgrade the affected package to a fixed version below.
- Packagist/mantisbt/mantisbt—upgrade to 2.25.2 or later
Is CVE-2021-33557 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.25.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |