CVEvulnerability
CVE-2026-59903
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-17
- Last modified
- 2026-09-23
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-524
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 configurations
• netty netty (< 4.1.137)
• netty netty (>= 4.2.0 < 4.2.17)
Related
Weakness · CWE (1)
- CWE-524 Use of Cache Containing Sensitive Information weakness
References
- https://github.com/netty/netty/pull/17213 Issue Tracking, Patch
- https://github.com/netty/netty/pull/17217 Issue Tracking, Patch
- https://github.com/netty/netty/releases/tag/netty-4.1.137.Final Release Notes
- https://github.com/netty/netty/releases/tag/netty-4.2.17.Final Release Notes
- https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46 Vendor Advisory