XSS in Solarwinds Observability Self-Hosted
CVE-2025-26391
SolarWinds Observability Self-Hosted XSS Vulnerability. The SolarWinds Platform was susceptible to a XSS vulnerability that affects user-created URL fields. This vulnerability requires authentication from a low-level account.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Solarwinds Observability Self-Hosted
- Solarwinds Observability Self-Hosted — versions SolarWinds Observability Self-Hosted 2025.4 and prior versions
Weakness classification (CWE)
References
- www.solarwinds.com/trust-center/security-advisories/CVE-2025-26391 (Vendor Advisory)
- documentation.solarwinds.com/en/success_center/orionplatform/content/release_no… (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-26391?
- CVE-2025-26391 is a medium-severity vulnerability in Solarwinds Observability Self-Hosted, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-11-18.
- How severe is CVE-2025-26391?
- Medium severity. CVSS v3 base score is 5.4 out of 10.