CVE WatchSep 12, 2026

CVE-2026-90472

msgpack-java through 0.9.12 contains a stack overflow vulnerability in MessageUnpacker.unpackValue() that recursively deserializes arrays an

CVSS

5.3

Medium

EPSS

—

KEV

—

Exploit Today

0-100

Published: Sep 12, 2026 · Last modified: Sep 12, 2026 · CWE-674

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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