What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-09 · updated 2026-07-23
• Weakness: CWE-502

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.

Affected products

• Spring Security: from 7.0.0 before 7.0.5.1 — fixed in 7.0.5.1
• Spring Security: from 7.0.0 before 7.0.5.1 — fixed in 7.0.5.1

How to fix

Upgrade to a fixed version: Spring Security 7.0.5.1; Spring Security 7.0.5.1. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2026-40993 or the next vulnerability affects your stack