MEDIUMVulnerability
CVE-2026-90473
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.
Properties
- severity
- MEDIUM
- score
- 5.3
- cve_id
- CVE-2026-90473
- signal_observed_at
- 2026-09-21T23:07:07+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- published_at
- 2026-09-12T11:16:34.347
- last_modified
- 2026-09-21T17:19:14.740
Related Entities (2)
HAS_WEAKNESS (1)
→[Weakness]Integer Overflow or Wraparound
DESCRIBED_BY (1)
→[Source]NVD
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