HIGH 7.5 Microsoft
CVE-2026-38969
ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling.
Microsoft Security Update 2026-Jul: ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling.
Affected Products
- azl3 ruby 3.3.5-8 on Azure Linux 3.0
- azl3 rubygem-webrick 1.8.1-3 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-38969
- https://nvd.nist.gov/vuln/detail/CVE-2026-38969
This high severity vulnerability with a CVSS score of 7.5 was published on 2026-07-14 via Microsoft. Affected: azl3 ruby 3.3.5-8 on Azure Linux 3.0, azl3 rubygem-webrick 1.8.1-3 on Azure Linux 3.0.
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