CVE-2020-25288

Name: CVE-2020-25288
Creator: NVD / NIST
Published: 2020-09-30T21:15:13.167+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2020-25288 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. 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.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mantisbt	Mantisbt	< 2.24.3

References

http://github.com/mantisbt/mantisbt/commit/221cf323f16a9738a5b27aaba94758f11281d85cPatch, Third Party Advisory
https://mantisbt.org/bugs/view.php?id=27275Exploit, Patch, Vendor Advisory
http://github.com/mantisbt/mantisbt/commit/221cf323f16a9738a5b27aaba94758f11281d85cPatch, Third Party Advisory
https://mantisbt.org/bugs/view.php?id=27275Exploit, Patch, Vendor Advisory

Timeline

Published: Sep 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-25288?

How severe is CVE-2020-25288?

CVE-2020-25288 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25288?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25288?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST