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CVE-2026-90473

msgpack-java through 0.9.12 Integer Overflow via MAP32 PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
msgpack / msgpack-javaaffected 0 through 0.9.12

CWE

CWE-190

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.