CVE-2021-25930

Name: CVE-2021-25930
Creator: NVD / NIST
Published: 2021-05-20T14:15:07.737+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.63%

Last modified Jun 17, 2026

CVE-2021-25930 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to CSRF, due to no CSRF protection, and since there is no validation of an existing user name while renaming a user. As a result, privileges of the renamed user are being overwritten by the old user and the old user is being deleted from the user list.. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

Description

In OpenNMS Horizon, versions opennms-1-0-stable through opennms-27.1.0-1; OpenNMS Meridian, versions meridian-foundation-2015.1.0-1 through meridian-foundation-2019.1.18-1; meridian-foundation-2020.1.0-1 through meridian-foundation-2020.1.6-1 are vulnerable to CSRF, due to no CSRF protection, and since there is no validation of an existing user name while renaming a user. As a result, privileges of the renamed user are being overwritten by the old user and the old user is being deleted from the user list.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.63%

45.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Opennms	Horizon	>= 1.0, < 27.1.1
Opennms	Meridian	>= 2015.1.0, < 2019.1.19
Opennms	Meridian	>= 2020.1.0, < 2020.1.7

References

https://github.com/OpenNMS/opennms/commit/607151ea8f90212a3fb37c977fa57c7d58d26a84Patch, Third Party Advisory
https://github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98cPatch, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25930Exploit, Third Party Advisory
https://github.com/OpenNMS/opennms/commit/607151ea8f90212a3fb37c977fa57c7d58d26a84Patch, Third Party Advisory
https://github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98cPatch, Third Party Advisory
https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25930Exploit, Third Party Advisory

Timeline

Published: May 20, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25930?

How severe is CVE-2021-25930?

CVE-2021-25930 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25930?

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-2021-25930?

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

Scan your code now

Source: NVD / NIST