CVE-2026-107296 msgpack5: Decoding negative int64 values mutates the input buffer

msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, decoding a negative signed 64-bit integer modifies the corresponding bytes in the caller-provided input buffer while computing the value. Applications that retain or reuse encoded input for integrity checks,...

EUVD-2025-115942

Malicious code in buffer-mutation-changelog-karma npm...