CVE-2026-15640
Authentication Bypass via SAML Response Manipulation
No known exploitation. EPSS puts it in the 24th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
- Delinea Secret ServerAffected: ≥ 10.5.0, ≤ 12.1.3Upgrade to: after 12.1.3Stated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.3% chance of exploitation activity in the next 30 days, which ranks it in the 24th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
10 events over 3 days, from the signal feeds we watch.
- Patch availablerecord updated
- Patch availablepatch available, record updated, record updated
- Patch availablepublished, weakness classified, att&ck mapped
Affected products
Technical detail
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
- Initial AccessT1078Valid Accountsmedium confidence
Sources
References in the record
Watch the software you run.
My Stack ranks new CVEs for your products by real-world exploitation, so the next serious one reaches you without reading every advisory.
We'll flag the next CVE, public exploit or patch for Secret Server (On-Prem), not every advisory.
A free account adds
- The full version matrix and every affected product
- Exploit links, proofs of concept and Metasploit modules
- Email alerts for the products you watch
- The same data over REST API, MCP and CLI