Vulnerability Description
msgpack-java through 0.9.12 contains a stack overflow vulnerability in MessageUnpacker.unpackValue() that recursively deserializes arrays and maps without nesting depth limits. Attackers can craft payloads with deeply nested arrays to exhaust the deserializing thread's stack and trigger StackOverflowError, causing per-request deserialization failures.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/msgpack/msgpack-java
- https://github.com/msgpack/msgpack-java/blob/v0.9.12/msgpack-core/src/main/java/
- https://github.com/msgpack/msgpack-java/issues/1015
- https://www.vulncheck.com/advisories/msgpack-java-through-0.9.12-stack-overflow-
- https://github.com/msgpack/msgpack-java/issues/1015
FAQ
What is CVE-2026-90472?
CVE-2026-90472 is a vulnerability with a CVSS score of 5.3 (MEDIUM). msgpack-java through 0.9.12 contains a stack overflow vulnerability in MessageUnpacker.unpackValue() that recursively deserializes arrays and maps without nesting depth limits. Attackers can craft pay...
How severe is CVE-2026-90472?
CVE-2026-90472 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-90472?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.