SEPTEMBER 13, 2026
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Case File

CVE-2026-90472

MEDIUM · CVSS 5.3 EPSS 0.33% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-12 · Last synced 2026-09-13

CyberRota Analysis

AI-Generated

The msgpack-java library versions up to 0.9.12 are vulnerable to a stack overflow due to unbounded recursive deserialization of arrays and maps in the MessageUnpacker.unpackValue() method. This flaw allows attackers to create payloads with deeply nested structures, potentially leading to denial-of-service conditions through StackOverflowError during deserialization. Java developers and organizations utilizing this library should prioritize patching to mitigate the risk of service disruptions.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-90472
Severity
MEDIUM
CVSS
5.3
EPSS
0.33%
Java

Original NVD 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.