{"apiVersion":"1.0","identifier":"CVE-2026-59903","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.","publishedAt":"2026-08-17T18:17:36","lastModifiedAt":"2026-08-17T19:16:32","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59903","cvssScore":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","epssProbability":0.00245,"riskScore":0.66,"affectedProduct":"Netty","affectedVersions":"cannotmatch","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-59903","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-59903","en":"https://www.redsauce.net/en/cves/CVE-2026-59903","fr":"https://www.redsauce.net/fr/cves/CVE-2026-59903","pt":"https://www.redsauce.net/pt/cves/CVE-2026-59903","de":"https://www.redsauce.net/de/cves/CVE-2026-59903","sk":"https://www.redsauce.net/sk/cves/CVE-2026-59903","el":"https://www.redsauce.net/el/cves/CVE-2026-59903"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-59903"}}