CVE-2020-25830

Name: CVE-2020-25830
Creator: NVD / NIST
Published: 2020-09-30T21:15:13.293+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 1.68%

Last modified Jun 17, 2026

CVE-2020-25830 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. An issue was discovered in MantisBT before 2.24.3. Improper escaping of a custom field's name allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript when attempting to update said custom field via bug_actiongroup_page.php.. EPSS estimates a 1.68% chance of exploitation in the next 30 days.

Description

An issue was discovered in MantisBT before 2.24.3. Improper escaping of a custom field's name allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript when attempting to update said custom field via bug_actiongroup_page.php.

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

1.68%

74.0th 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/8c6f4d8859785b67fb80ac65100ac5259ed9237dPatch, Third Party Advisory
https://mantisbt.org/bugs/view.php?id=27304Exploit, Patch, Vendor Advisory
http://github.com/mantisbt/mantisbt/commit/8c6f4d8859785b67fb80ac65100ac5259ed9237dPatch, Third Party Advisory
https://mantisbt.org/bugs/view.php?id=27304Exploit, Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-25830?

How severe is CVE-2020-25830?

CVE-2020-25830 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 1.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-25830?

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-2020-25830?

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

Scan your code now

Source: NVD / NIST