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CVE-2023-46589 is an HTTP request-smuggling vulnerability in Apache Tomcat caused by incorrect parsing of HTTP trailer headers. A trailer header exceeding the configured header size limit can cause Tomcat to interpret one request as multiple requests, potentially enabling request smuggling when deployed behind a reverse proxy. Affected versions are 11.0.0-M1 through 11.0.0-M10, 10.1.0-M1 through 10.1.15, 9.0.0-M1 through 9.0.82, and 8.5.0 through 8.5.95. Older end-of-life versions may also be affected.
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An Apache Tomcat HTTP request-smuggling vulnerability involving malformed trailer headers.
An Apache Tomcat HTTP request-smuggling vulnerability involving malformed trailer headers.
Apache Tomcat incorrectly parses HTTP trailer headers exceeding the header size limit, potentially enabling HTTP request smuggling when deployed behind a reverse proxy. Affected versions are 11.0.0-M1–11.0.0-M10, 10.1.0-M1–10.1.15, 9.0.0-M1–9.0.82, and 8.5.0–8.5.95; older end-of-life versions may also be affected. The advisory recommends upgrading to 11.0.0-M11, 10.1.16, 9.0.83, or 8.5.96, respectively, or later versions.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.