shamaton/msgpack · Security
Denial of service in github.com/shamaton/msgpack
- GHSA ID
- GHSA-h9q6-hc68-35rp
- CVE ID
- CVE-2026-32284
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
CWEs
- CWE-125 · Out-of-bounds Read
References
- https://github.com/golang/vulndb/issues/4513 ↗
- https://github.com/shamaton/msgpack/issues/59 ↗
- https://securityinfinity.com/research/shamaton-msgpack-oob-panic-fixext-dos-2026 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-32284 ↗
- https://pkg.go.dev/vuln/GO-2026-4513 ↗
- https://github.com/advisories/GHSA-h9q6-hc68-35rp ↗