SAML Payloads Decrypted Without Valid Signature

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Summary

CVECVE-2026-41694
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-10 00:16:50 UTC
Updated2026-06-10 00:16:50 UTC
DescriptionSince 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.

Risk And Classification

Primary CVSS: v3.1 3.7 LOW from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-347 | CWE-347 CWE-347: Improper Verification of Cryptographic Signature

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNACVSS3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Spring Spring Security affected 5.7.0 5.7.24 custom Not specified
CNA Spring Spring Security affected 5.8.0 5.8.26 custom Not specified
CNA Spring Spring Security affected 6.3.0 6.3.17 custom Not specified
CNA Spring Spring Security affected 6.4.0 6.4.17 custom Not specified
CNA Spring Spring Security affected 6.5.0 6.5.11 custom Not specified
CNA Spring Spring Security affected 7.0.0 7.0.6 custom Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-41694 [email protected] spring.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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