Out-of-bounds Read The advisory has been revoked - it doesn't affect any version of package github.com/shamaton/msgpack/v2/ext (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMSHAMATONMSGPACKV2EXT-15753942
- published23 Mar 2026
- disclosed16 Mar 2026
- creditUnknown
Introduced: 16 Mar 2026
CVE-2026-32284 (opens in a new tab)How to fix?
There is no fixed version for github.com/shamaton/msgpack/v2/ext.
Amendment
This was deemed not a vulnerability.
Overview
Affected versions of this package are vulnerable to Out-of-bounds Read via the Unmarshal, UnmarshalAsMap, UnmarshalAsArray, and Marshal functions, which invoke Decode(). An attacker can cause a panic with truncated fixext data that triggers an out-of-bounds read.
Note: This vulnerability is a bypass for the issue described in CVE-2022-41719.