What’s Vulnerable › Vulnerabilities

CVE-2023-34050: Spring AMQP Deserialization Vulnerability

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-10-19 · updated 2026-06-17
• Weakness: CWE-502

Description

In spring AMQP versions 1.0.0 to 2.4.16 and 3.0.0 to 3.0.9 , allowed list patterns for deserializable class names were added to Spring AMQP, allowing users to lock down deserialization of data in messages from untrusted sources; however by default, when no allowed list was provided, all classes could be deserialized. Specifically, an application is vulnerable if * the SimpleMessageConverter or SerializerMessageConverter is used * the user does not configure allowed list patterns * untrusted message originators gain permissions to write messages to the RabbitMQ broker to send malicious content

Affected products

• Spring AMQP: from 1.0.0 before 2.4.16; from 3.0.0 before 3.0.9 — fixed in 2.4.16, 3.0.9
• Spring AMQP: from 1.0.0 before 2.4.17; from 3.0.0 before 3.0.10 — fixed in 2.4.17, 3.0.10

How to fix

Upgrade to a fixed version: Spring AMQP 2.4.16, 3.0.9; Spring AMQP 2.4.17, 3.0.10. Check the vendor advisory for mitigations.

References

• https://spring.io/security/cve-2023-34050
• https://spring.io/security/cve-2023-34050

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