Live › vulnerability › CVE-2026-32284
Go to dashboardThe shamaton/msgpack Go library's decoder does not check buffer length for truncated fixext data, so a crafted msgpack input causes an out-of-bounds read and a runtime panic. An attacker who can send msgpack input to the service can crash the process, a denial of service.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:13 UTC, 0h before NVD. All times on this page are UTC.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| github.com/shamaton/msgpack | go | all versions | – |
| github.com/shamaton/msgpack/v2 | go | < 2.4.1 | 2.4.1 |
| github.com/shamaton/msgpack/v3 | go | < 3.1.1 | 3.1.1 |
Run govulncheck ./... in the Go module and look for GO-2026-4513; or check go.mod for github.com/shamaton/msgpack, msgpack/v2 below 2.4.1, or msgpack/v3 below 3.1.1.
2.4.1 or github.com/shamaton/msgpack/v3 to 3.1.1, then rebuildEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2026-32284")
Go Vulnerability Database, CC-BY 4.0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.