What is CVE-2026-28301?

CVE-2026-28301 is a medium-severity vulnerability in Solarwinds Observability Self-Hosted, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.8/10. Published 2026-06-09.

How severe is CVE-2026-28301?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Open Redirect in Solarwinds Observability Self-Hosted

CVE-2026-28301

A vulnerability in which an attacker can provide a crafted external URL that may redirect a user to an unintended website.

Vulnerability class: Open Redirect

Published 2026-06-09 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (11.5th percentile), scored 2026-09-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Solarwinds Observability Self-Hosted — versions 2026.1 and previous versions

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

documentation.solarwinds.com/en/success_center/orionplatform/content/core-secur… (x_secure-configuration-guide)
documentation.solarwinds.com/en/success_center/orionplatform/content/release_no… (release-notes)
www.solarwinds.com/trust-center/security-advisories/CVE-2026-28301 (vendor-advisory)

Frequently asked questions

What is CVE-2026-28301?: CVE-2026-28301 is a medium-severity vulnerability in Solarwinds Observability Self-Hosted, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.8/10. Published 2026-06-09.
How severe is CVE-2026-28301?: Medium severity. CVSS v3 base score is 4.8 out of 10.