CVE-2026-59307: Deserialization allow-list silently bypassed: setBeanClassLoader replaces deserializer but mapper keeps stale reference

Severity: high (CVSS 8.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-27 · updated 2026-08-31
Weakness: CWE-502

Description

An operator who calls JdbcMessageStore.addAllowedPatterns(...) to restrict deserialization receives no protection at all when the store is a Spring-managed bean. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12

Affected products

Spring Integration: from 6.4.0 through 6.4.12; from 6.5.0 through 6.5.10; from 7.0.0 through 7.0.5; 7.1.0, 7.1.0-milestone1, 7.1.0-milestone2, 7.1.0-milestone3, 7.1.0-rc1
Spring Integration: from 7.0.0 through 7.0.5; from 6.5.0 through 6.5.10; from 6.4.0 through 6.4.12; 7.1.0

References

https://spring.io/security/cve-2026-59307

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