Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Database Entry
CVE-2026-40993

7.3HIGH

Key Information:

Vendor

Spring

Status
Spring Security
Vendor
CVE Published:
9 June 2026

What is CVE-2026-40993?

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.

Affected Version(s)

Spring Security 7.0.0 < 7.0.6

References

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

CVSS V3.1

Score:
7.3
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.