What is CVE-2026-40993?

CVE-2026-40993 is a high-severity vulnerability in Spring Security, classified under Deserialization of Untrusted Data. CVSS score: 7.3/10. Published 2026-06-10.

How severe is CVE-2026-40993?

High severity. CVSS v3 base score is 7.3 out of 10.

Deserialization in Spring Security

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 verifi…

Vulnerability class: Insecure Deserialization

EPSS: 0.002 (9.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H.

Affected products

Spring Security — versions 7.0.0
Vmware Spring_security

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@vmware.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-40993?: CVE-2026-40993 is a high-severity vulnerability in Spring Security, classified under Deserialization of Untrusted Data. CVSS score: 7.3/10. Published 2026-06-10.
How severe is CVE-2026-40993?: High severity. CVSS v3 base score is 7.3 out of 10.