request smuggling

CVE-2026-58055 is a newly published medium-severity vulnerability in nghttp2’s nghttpx proxy, disclosed on June 27, 2026, affecting versions through 1.69.0 and allowing HTTP request/response smuggling when an Upgrade request with Content-Length is forwarded to reusable backend connections. The...

CVE-2026-6324 is a newly cataloged libsoup HTTP request-smuggling flaw, published by NVD on May 29, 2026 and last modified June 17, affecting scenarios where libsoup sits behind a non-libsoup proxy or in front of a non-libsoup backend. Its CVSS 3.1 score is only 4.8, but the number undersells...

CVE-2026-2708 is a reminder that some of the most consequential web vulnerabilities still begin with a deceptively small parsing decision: what should a server do when an HTTP request contains more than one Content-Length header? The flaw, assigned to libsoup, concerns HTTP/1 request smuggling...

Microsoft’s security page has recorded a new HTTP request‑smuggling vulnerability, tracked as CVE‑2026‑23941, which stems from how the Erlang/OTP inets HTTP server (httpd) parses conflicting Content‑Length headers using a “first‑wins” strategy — a parsing mismatch that lets an attacker...