What is CVE-2026-28298?

CVE-2026-28298 is a medium-severity vulnerability in Solarwinds Observability Self-hosted, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-03-26.

How severe is CVE-2026-28298?

Medium severity. CVSS v3 base score is 5.9 out of 10.

XSS in Solarwinds Observability Self-hosted

CVE-2026-28298

SolarWinds Observability Self-Hosted was found to be affected by a stored cross-site scripting vulnerability, which when exploited, can lead to unintended script execution.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (4.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N.

Affected products

Solarwinds Observability Self-hosted — versions 2026.1.1 and previous versions

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.solarwinds.com/trust-center/security-advisories/CVE-2026-28298
documentation.solarwinds.com/en/success_center/orionplatform/content/release_no…

Frequently asked questions

What is CVE-2026-28298?: CVE-2026-28298 is a medium-severity vulnerability in Solarwinds Observability Self-hosted, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2026-03-26.
How severe is CVE-2026-28298?: Medium severity. CVSS v3 base score is 5.9 out of 10.