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TI-2021-07945 Aliases CVE-2021-25935GHSA-3wh7-f7pv-9353

Cross-site scripting in OpenNMS

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

In OpenNMS Horizon, versions opennms-17.0.0-1 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-2020.1.7-1 are vulnerable to Stored Cross-Site Scripting, since the function `add()` performs improper validation checks on the input sent to the `foreign-source` parameter. Due to this flaw an attacker could bypass the existing regex validation and inject an arbitrary script which will be stored in the database.

Why it matters now

EPSS 0.0091 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—OpenNMSopennms-17.0.0-1 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-2020.1.7-1—No fix listedCNA
  • OpenNMS Vendor— Affected opennms-17.0.0-1 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-2020.1.7-1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:*17.0.0 – 27.1.0VulnerableThe OpenNMS Group
cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*2015.1.0 – 2019.1.18; 2020.1.0 – 2020.1.7VulnerableThe OpenNMS Group
  • cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:* Versions 17.0.0 – 27.1.0 Vulnerable ·The OpenNMS Group
  • cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:* Versions 2015.1.0 – 2019.1.18; 2020.1.0 – 2020.1.7 Vulnerable ·The OpenNMS Group

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-25935
  2. 2026-10-03 Alias added: GHSA-3wh7-f7pv-9353

References

Exploit 1

Patch 2

  • TI-2021-07941 Cross-site request forgery in OpenNMS CVSS 3.1HIGH 8.8
  • TI-2021-07943 Cross-site scripting in OpenNMS CVSS 3.1MEDIUM 4.8
  • TI-2021-07939 Cross-site scripting in OpenNMS CVSS 3.1MEDIUM 4.8
  • TI-2021-07940 Cross-site request forgery in OpenNMS CVSS 3.1MEDIUM 4.3
  • TI-2021-02366 OpenNMS Meridian 2016, 2017, 2018 before 2018.1.25, 2019 before 2019.1.16, and 2020… CVSS 3.1HIGH 8.8
  • TI-2023-00827 ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users CVSS 3.1HIGH 8.2
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences