CVE-2026-40993 json
Unfiltered Java Native Deserialization of SAML 2.0 Asserting Party Credentials BLOB Database Entry
published 2026-06-09 5 mo ago modified 2026-08-12 2 mo ago also GHSA-2q7c-5gjm-7q23 , EUVD-2026-35886
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.springframework.security:spring-security-saml2-service-provider 7.0.6
- Spring Spring Security 7.0.5.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H |
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.3 | CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.springframework.security:spring-security-saml2-service-provider | >=7.0.0, <7.0.6 |
7.0.6 |
Affected products
- Spring Spring Security
Classification
- Weakness
-
- CWE-502 Deserialization of Untrusted Data
- Technology feeds
References
-
spring.io
/security/cve-2026-40993
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-40993
advisory
-
github.com
/spring-projects/spring-security
package
-
github.com
/spring-projects/spring-security/releases/tag/7.0.6
web
Sources
- CVE List CVE-2026-40993
- GitHub Advisory GHSA-2q7c-5gjm-7q23
- NVD CVE-2026-40993
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