XSS in Mantisbt

CVE-2020-25288

An issue was discovered in MantisBT before 2.24.3. When editing an Issue in a Project where a Custom Field with a crafted Regular Expression property is used, improper escaping of the corresponding form input's pattern attribute allows HTML injection and, if CSP settings permit, execution of arbitrary JavaScript.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.015 (71.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-25288?
CVE-2020-25288 is a medium-severity vulnerability in Mantisbt, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-09-30.
How severe is CVE-2020-25288?
Medium severity. CVSS v3 base score is 4.8 out of 10.