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CVE-2005-2090 is an HTTP request-smuggling vulnerability in legacy Jakarta Tomcat Coyote HTTP connectors. Affected releases improperly process HTTP requests containing conflicting message-framing headers, specifically both Content-Length and Transfer-Encoding: chunked. Tomcat can forward request-body data such that a downstream server or intermediary interprets it as a separate HTTP request, creating request-stream desynchronization. Historical affected branches include Tomcat 4.0.x, 4.1.x, 5.0.x, and 5.5.x; the supplied vulnerability data specifically identifies affected releases through 4.1.34, 5.0.30, and 5.5.22.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A previously addressed vulnerability whose incomplete fix led to CVE-2013-4286; no further technical details are provided in this content.
HTTP request-smuggling-style flaw caused by accepting multiple Content-Length headers.
HTTP request smuggling-style flaw permitting cache poisoning, XSS, and cross-user information disclosure.
An HTTP request-smuggling flaw in Jakarta Tomcat caused by incorrect handling and forwarding of requests containing both Transfer-Encoding: chunked and Content-Length headers. A downstream server can interpret the forwarded body as a separate request, enabling web-cache poisoning, WAF bypass, and cross-site scripting attacks.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.