CVE-2016-2569

Hola, Gracias por leer mi primera entrada en el blog. Hoy vamos a crear un exploit para una de las herramientas de código abierto, el servidor proxy de caché Squid. ¿Qué es Squido? Squid es un proxy de caché para la Web que soporta HTTP, HTTPS, FTP y más. Reduce el ancho de banda y mejora los...

CVE-2026-59903

A flaw was found in Netty, an asynchronous, event-driven network application framework. The CorsHandler component incorrectly replaces application Vary headers, such as Authorization or Cookie, with Origin. This allows a caching proxy or Content Delivery Network CDN to reuse authenticated respons...

CVE-2026-54625

django CMS is a content management system powered by Django. Prior to 5.0.8 and in 5.1.0a1, the django CMS page cache in cms/cache/page.py ignores request headers declared by plugins through getvarycacheon. The pagecachekey function includes the cache prefix, site, language, path, and timezone bu...

CVE-2026-54625 django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

django CMS is a content management system powered by Django. Prior to 5.0.8 and in 5.1.0a1, the django CMS page cache in cms/cache/page.py ignores request headers declared by plugins through getvarycacheon. The pagecachekey function includes the cache prefix, site, language, path, and timezone bu...

CVE-2026-54625 django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

django CMS is a content management system powered by Django. Prior to 5.0.8 and in 5.1.0a1, the django CMS page cache in cms/cache/page.py ignores request headers declared by plugins through getvarycacheon. The pagecachekey function includes the cache prefix, site, language, path, and timezone bu...

PT-2026-79093

Name of the Vulnerable Software and Affected Versions django CMS versions prior to 5.0.8 django CMS version 5.1.0a1 Description The page cache in cms/cache/page.py ignores request headers declared by plugins through the get vary cache on function. While the page cache key function includes the...

Linux Distros Unpatched Vulnerability : CVE-2026-59903

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

GHSA-8C42-7QJ2-3J46 Netty Vulnerable to Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite

Summary Netty's CorsHandler silently overwrites existing Vary headers, enabling cache poisoning and sensitive information disclosure. Details io.netty.handler.codec.http.cors.CorsHandlersetVaryHeader overwrites any existing Vary headers set by backend applications. java private static void...

Netty Vulnerable to Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite

Summary Netty's CorsHandler silently overwrites existing Vary headers, enabling cache poisoning and sensitive information disclosure. Details io.netty.handler.codec.http.cors.CorsHandlersetVaryHeader overwrites any existing Vary headers set by backend applications. java private static void...

Use of Cache Containing Sensitive Information

Overview io.netty:netty-codec-http is a network application framework for rapid development of maintainable high performance protocol servers & clients. Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information due to the setVaryHeader method in...

DEBIAN-CVE-2026-59903

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...

CVE-2026-59903

Netty's CorsHandler.setVaryHeader uses set() to write the Vary: Origin header, which replaces any application-defined Vary headers (e.g., Authorization, Cookie) rather than appending to them. This causes caching proxies and CDNs to ignore per-user cache keys and serve one user's authenticated res...

CVE-2026-59903

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...

CVE-2026-59903

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...

CVE-2026-59903 Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite

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...

EUVD-2026-60318

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...

CVE-2026-59903 Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite

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...

PT-2026-76751

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...

CVE-2025-71381

A flaw was found in Hono's Cross-Origin Resource Sharing CORS middleware. When the origin is not set to a wildcard, the middleware improperly copies the Vary header from incoming requests into the response. This allows an attacker to inject arbitrary Vary values, potentially leading to cache key...

The vulnerability of the `django.utils.cache.has_vary_header()` function in the Django web application framework allows attackers to disclose sensitive information that should be protected.

The vulnerability of the django.utils.cache.hasvaryheader function in the Django web application framework is related to incomplete comparisons with missing factors. Exploiting this vulnerability can allow an attacker to disclose sensitive information...