CVE-2026-15640
Authentication Bypass via SAML Response Manipulation
Description
Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user.
INFO
Published Date :
Sept. 16, 2026, 12:17 a.m.
Last Modified :
Sept. 16, 2026, 12:17 a.m.
Remotely Exploit :
Yes !
Source :
1443cd92-d354-46d2-9290-d812316ca43a
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 1443cd92-d354-46d2-9290-d812316ca43a | ||||
| CVSS 4.0 | CRITICAL | 1443cd92-d354-46d2-9290-d812316ca43a |
Solution
- Review SAML IdP configuration for potential weaknesses.
- Apply security updates for Secret Server.
- Ensure proper validation of SAML responses.
- Test updated configuration thoroughly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-15640.
| URL | Resource |
|---|---|
| https://delinea.com/security-advisories |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-15640 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-15640
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-15640 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-15640 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 1443cd92-d354-46d2-9290-d812316ca43a
Sep. 16, 2026
Action Type Old Value New Value Added Description Under certain conditions a valid SAML IdP response may be used to impersonate another Secret Server user. Added CVSS V4.0 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:X/V:X/RE:X/U:X Added CWE CWE-290 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/15xxx/CVE-2026-15640.json">CVE-2026-15640</a> Added Reference https://delinea.com/security-advisories