← CVE Intelligence

CVE-2026-107296

msgpack5: Decoding negative int64 values mutates the input buffer PUBLISHED

Description (CNA)

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, logging, or later processing can observe silently corrupted data, while positive integers and other MessagePack value types are unaffected. This issue is fixed in version 6.1.0.

Affected (CNA)

Vendor / productVersions
mcollina / msgpack5affected < 6.1.0

CWE

CWE-471

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.