CVE-2026-40993

Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Database Entry

State: Published
Severity: 7.3 High
Published: Jun 9, 2026
Updated: Jun 27, 2026
Reserved: Apr 16, 2026

Description

An attacker with write permissions to the database table managed by JdbcAssertingPartyMetadataRepository (saml2_asserting_party_metadata) may be able to store malicious serialized payloads in the columns containing the collection of verification or encryption credentials (verification_credentials and encryption_credentials, respectively).

Affected versions: Spring Security 7.0.0 through 7.0.5.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H	vmware

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Spring SecuritySpring	7.0.0 to before 7.0.5.1Affected

References

https://spring.io/security/cve-2026-40993

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