Hi,

The following vulnerability was published for msgpack-java.

CVE-2026-90472[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-90472
https://www.cve.org/CVERecord?id=CVE-2026-90472
[1] https://github.com/msgpack/msgpack-java/issues/1015

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore