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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-32284

Denial of service in github.com/shamaton/msgpack

Description

The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

github.com/shamaton/msgpack github.com/shamaton/msgpack

Default version status: affected

github.com/shamaton/msgpack/v2 github.com/shamaton/msgpack/v2

Default version status: unaffected

  • 0 to < 2.4.1affected

github.com/shamaton/msgpack/v3 github.com/shamaton/msgpack/v3

Default version status: unaffected

  • 0 to < 3.1.1affected

References