CVE-2026-40993: spring spring security Deserialization of Untrusted Data
Vulnerability summary
CVE-2026-40993 is a high (CVSS 7.3) Deserialization of Untrusted Data vulnerability in spring spring security. EPSS estimates a 0.30% chance of exploitation in the next 30 days, higher than 21.8% of scored vulnerabilities.
Timeline
- 09-06-2026PublishedVulnerability first disclosed.
- 27-06-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · MavenEcosystem advisory · calculated7.3HighCVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H
- NVDNIST7.2HighCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.30%
Chance of exploitation in the next 30 days
Percentile
22%
Versus all other CVEs
30-day change
+0.11 pp
From 0.20% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Org.springframework.security1 product
- spring-security-saml2-service-provider≥ 7.0.0, < 7.0.6
Spring1 product
- spring security≥ 7.0.0, < 7.0.5.1
Vmware1 product
- spring_security≥ 7.0.0, < 7.0.5.1
3 vendors · 3 products
