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Critical 9.5Published Sep 15, 2026
CVE-2026-15640Authentication Bypass via SAML Response Manipulation
Updated under an hour ago ()
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It affects Delinea Secret Server (On-Prem). Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.
- CVSS
- 9.5 CRITICAL (v4.0, CNA)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
- Weakness (CWE)
- CWE-290
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Delinea
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Delinea Secret Server (On-Prem) delinea:secret_server_on_prem (from the name) | from 10.5.0 through 12.1.3 | CNA record |
References
- https://delinea.com/security-advisoriesvendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.