CVE-2023-0846

mediumpriority · track · 24EPSS 0.005 · 42 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.49% (42nd) EPSS

CVSS 6.1 · medium

Is it mine?

9 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-28

Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information. Users should upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4. 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.

cvss

Technical severity, 0–10. One row per scoring source.

6.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 2.7

v3.16.7mediumAV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · FSTEC (BDU) RU

v3.16.7mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.16.7mediumCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · security@opennms.comexploitability 1.5 · impact 5.2

v3.16.1mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · OSV

v3.15.6mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimaryCWE-79USCWE-79US

affected products (9)

Products and version ranges known to be affected.

Horizon26.1.0 → 31.0.4enisa_euvdEU
Meridian2020.1.0 → 2020.1.32enisa_euvdEU
Meridian2021.1.0 → 2021.1.24enisa_euvdEU
Meridian2022.1.0 → 2022.1.13enisa_euvdEU
The OpenNMS Group OpenNMS Horizon≤ 31.0.4fstec_bduRU
The OpenNMS Group OpenNMS Meridian≤ 2023.1.0fstec_bduRU
opennms horizon< 31.0.4nvdUScpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:*
opennms meridian< 2023.1.0nvdUScpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
Maven org.opennms:opennms< 31.0.3osvUSpkg:maven/org.opennms/opennms

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-79jr-8fhm-8wv3OpenNMS Horizon and Meridian vulnerable to Cross-site Scripting2023-02-22ghsa · osvUS
Unauthenticated, stored cross-site scripting in the display of alarm reduction keys in multiple versions of OpenNMS Horizon and Meridian could allow an attacker access to confidential session information.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd osv NVD CVE.org MITRE

published 2023-02-22modified 2026-06-17

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+53072 more

references (7)

External citations — patches, advisories, analysis.

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