Vulnerability in Miniorange Oauth Single Sign On – Sso (Oauth Client)

CVE-2026-28008

Unauthenticated Broken Authentication in OAuth Single Sign On – SSO (OAuth Client) <= 7.0.0 versions.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (46.9th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-28008: held from 0.004 to 0.006.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-28008?
CVE-2026-28008 is a critical-severity vulnerability in Miniorange Oauth Single Sign On – Sso (Oauth Client), classified under Authentication Bypass by Spoofing. CVSS score: 9.8/10. Published 2026-08-13.
How severe is CVE-2026-28008?
Critical severity. CVSS v3 base score is 9.8 out of 10.