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Vulnerability record · CVE-2026-15640 · published 16 September 2026

CVE-2026-15640: Authentication bypass by spoofing vulnerability

Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.

9.5 CVSS 4.0 Critical EPSS 0.28% · top 81.8% CWE-290 · Authentication bypass by spoofing Awaiting Analysis
9.5CVSS 4.0 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
18 Sep 2026Last modified by NVD

Description

Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://delinea.com/security-advisories

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-15640), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.