Information Exposure Through Caching Affecting netty-tcnative package, versions <2.0.84-150200.3.51.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.25% (15th percentile)

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  • Snyk IDSNYK-SLES156-NETTYTCNATIVE-20305713
  • published30 Sept 2026
  • disclosed29 Sept 2026

Introduced: 29 Sep 2026

NewCVE-2026-59903  (opens in a new tab)
CWE-524  (opens in a new tab)

How to fix?

Upgrade SLES:15.6 netty-tcnative to version 2.0.84-150200.3.51.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty-tcnative package and not the netty-tcnative package as distributed by SLES. See How to fix? for SLES:15.6 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1