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.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-8c42-7qj2-3j46 | Netty Vulnerable to Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 17 Aug 2026 20:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Netty
Netty netty |
|
| Vendors & Products |
Netty
Netty netty |
Mon, 17 Aug 2026 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite | |
| Weaknesses | CWE-524 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-17T18:14:01.121Z
Reserved: 2026-07-07T16:40:07.984Z
Link: CVE-2026-59903
No data.
Status : Received
Published: 2026-08-17T18:17:36.250
Modified: 2026-08-17T19:16:32.890
Link: CVE-2026-59903
No data.
OpenCVE Enrichment
Updated: 2026-08-17T20:15:06Z
Weaknesses
Github GHSA