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CVE-2021-25930

MEDIUM

4.3

CVSS Score

Published: May 20, 2021 at 01:57 PM UTC

Updated: June 17, 2026 at 03:42 AM UTC

3 products affected across 1 vendorMeridianHorizonOpenNMS

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Severity

MEDIUM4.3

Exploit prediction

EPSS 0.6%

SSVC

PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Horizon · Opennms

95%

1.0 ≤ v < 27.1.1

Affected range stops below 27.1.1, so it looks safe — our inference, not a vendor statement

Meridian · Opennms

95%

2015.1.0 ≤ v < 2019.1.192020.1.0 ≤ v < 2020.1.7

Affected range stops below 2019.1.19, so it looks safe — our inference, not a vendor statement

Affected range stops below 2020.1.7, so it looks safe — our inference, not a vendor statement

OpenNMS · Opennms

60%

opennms-1-0-stable,opennms-1.0.1 through opennms-27.1.0-1,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

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/OpenNMS/opennms/commit/607151ea8f90212a3fb37c977fa57c7d58d26a84

x_refsource_MISCPatchThird Party Advisory

Source: [email protected]

https://github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98c

x_refsource_MISCExploitThird Party Advisory

Source: [email protected]

https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25930

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-352

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