Vulnerability Database · RubyGems · msgpack · Version
msgpack 0.3.4
0.3.4 is affected by 1 vulnerability.
The vulnerabilities that cover this exact version are listed below with the fixed version to move to. The upgrade Vulert recommends: 1.8.5.
Critical 0 High 0 Medium 0 Low 1 Unrated 0
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Released 31 Mar 2010
Licence Apache-2.0
Also known from other sources 1
Newer releases 92
Database updated 23/Oct/2026
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01 Vulnerabilities affecting this version
msgpack 0.3.4 vulnerabilities
1 vulnerability cover msgpack 0.3.4. Open the full list in the database.
| Vulnerability | Severity | Fixed version | Disclosed |
|---|---|---|---|
| CVE-2026-54522: MessagePack Buffer Use-After-Free Vulnerability Leading to Cross-Buffer Disclosure | 2.1 low | 1.8.2 | 30 Jul 2026 |
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Questions
About msgpack 0.3.4
Is msgpack 0.3.4 vulnerable?
Yes. 1 vulnerability in the Vulert database cover msgpack 0.3.4: 0 critical, 0 high, 0 medium and 1 low. The upgrade Vulert recommends is 1.8.5, and each entry above names the fixed version to move to.
Which version of msgpack should I use instead of 0.3.4?
1.8.5 is the version Vulert recommends for this release line. The version table on the package page lists every release with the vulnerabilities recorded against it.
Is 0.3.4 the latest release of msgpack?
No. 0.3.4 was published 31 Mar 2010, and newer releases exist. Newer is not automatically safer — the version table on the package page shows what each release carries.
How do I monitor msgpack for upcoming vulnerabilities?
Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the msgpack version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.