CVE-2021-25935: opennms horizon Cross-site Scripting
Vulnerability summary
CVE-2021-25935 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in opennms horizon. EPSS estimates a 0.91% chance of exploitation in the next 30 days, higher than 59.5% of scored vulnerabilities. 1 public exploit is recorded.
Timeline
- 25-05-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
0.91%
Chance of exploitation in the next 30 days
Percentile
60%
Versus all other CVEs
30-day change
0.00 pp
From 0.91% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (whitesourcesoftware.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
1 vendor · 2 products
References
3 links- github.com/OpenNMS/opennms/commit/eb08b5ed4c5548f3e941a1f0d0363ae4439fa98cX Refsource MISCPatchThird Party Advisory
- www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25935X Refsource MISCExploitThird Party Advisory
- github.com/OpenNMS/opennms/commit/101e3aa06ec9a1f8f266335fc6f5685c062c6117X Refsource MISCPatchThird Party Advisory