Spring Security SAML Decryption Oracle (v5.7-7.0.5)
CVE-2026-41694 Published on June 9, 2026
SAML Payloads Decrypted Without Valid Signature
Since Spring Security SAML decrypts SAML Responses as well as elements of SAML LogoutRequests and LogoutResponses without requiring a valid signature, attackers may be able to craft these SAML payloads and use the Service Provider as a decryption oracle.
Affected versions:
Spring Security 5.7.0 through 5.7.23; 5.8.0 through 5.8.25; 6.3.0 through 6.3.16; 6.4.0 through 6.4.16; 6.5.0 through 6.5.10; 7.0.0 through 7.0.5.
Vulnerability Analysis
CVE-2026-41694 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Weakness Type
Improper Verification of Cryptographic Signature
The software does not verify, or incorrectly verifies, the cryptographic signature for data.
Products Associated with CVE-2026-41694
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Affected Versions
Spring Security:- Version 5.7.0 and below 5.7.24 is affected.
- Version 5.8.0 and below 5.8.26 is affected.
- Version 6.3.0 and below 6.3.17 is affected.
- Version 6.4.0 and below 6.4.17 is affected.
- Version 6.5.0 and below 6.5.11 is affected.
- Version 7.0.0 and below 7.0.6 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.