MEDIUM 5.4 Microsoft
CVE-2026-54522
MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
Microsoft Security Update 2026-Jul: MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
Affected Products
- azl3 rubygem-msgpack 1.7.2-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54522
- https://nvd.nist.gov/vuln/detail/CVE-2026-54522
This medium severity vulnerability with a CVSS score of 5.4 was published on 2026-07-14 via Microsoft. Affected: azl3 rubygem-msgpack 1.7.2-1 on Azure Linux 3.0.
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