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CVE-2025-53121

Stored XSS in multiple 33.0.8files in opennms/opennms

Medium6.9EPSS 0.22%
Published
Updated
Reserved
Assigned by
OpenNMS

Description

Multiple stored XSS were found on different nodes with unsanitized parameters in OpenMNS Horizon 33.0.8 and versions earlier than 33.1.6 on multiple platforms that allow an attacker to store on database and then inject HTML and/or Javascript on the page. The solution is to upgrade to Horizon 33.1.6, 33.1.7 or Meridian 2024.2.6, 2024.2.7 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet. OpenNMS thanks Fábio Tomé for reporting this issue.

Scores

CVSS scores of CVE-2025-53121, by who scored it
Scored byCVSSScoreVector
OpenNMSCNA (assigner)4.0Medium6.9CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
NVDNVD · Deferred4.0Medium6.9CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.22% · top 88% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.9.

Weakness

Affected products

  • The OpenNMS Group · Horizon

    • affected 33.0.8 – < 33.1.6, 33.1.7
    • unknown < 33.0.8

  • The OpenNMS Group · Meridian

    • affected 2024.1.4 – < 2024.2.6, 2024.2.7
    • affected 2023.1.20 – < 2024.2.6, 2024.2.7
    • unknown 2023.0.0 – ≤ 2023.1.20
    • unknown 2024.0.0 – ≤ 2024.1.4

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

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Record last updated .