Feed/CVE-2026-59903
CVE-2026-59903MEDIUMCVSS 6.5

CVE-2026-59903

Published Aug 17, 2026·Updated Aug 17, 2026

NVD Description

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.

Affected Packages (1)

io.netty:netty-codec-httpMAVEN
From 4.2.0.Final
Fixed in = 4.2.16.Final

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

References

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