GHSA-9vjp-f3jg-99pqMediumCVSS 5.3
msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker...
🔗 CVE IDs covered (1)
📋 Description
msgpack-java through 0.9.12 contains an integer overflow vulnerability in MessageUnpacker.skipValue() when processing MAP32 containers with large element counts. Attackers can supply a MAP32 element count at or above 0x40000000 that wraps when doubled, causing the parser cursor to desynchronize and attacker-controlled data to be returned in place of later fields.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-90473
- https://github.com/msgpack/msgpack-java/issues/1014
- https://github.com/msgpack/msgpack-java
- https://github.com/msgpack/msgpack-java/blob/v0.9.12/msgpack-core/src/main/java/org/msgpack/core/MessageUnpacker.java#L573-L581
- https://www.vulncheck.com/advisories/msgpack-java-through-0.9.12-integer-overflow-via-map32
- https://github.com/advisories/GHSA-9vjp-f3jg-99pq