CVE-2026-66752 - tiny-http 0.12.0 HTTP Request Smuggling via Transfer-Encoding Handling

CVE-2026-66752 - tiny-http 0.12.0 HTTP Request Smuggling via Transfer-Encoding Handling

https://cvefeed.io/rssfeed/latest.atom / Tue, 07/28/2026 - 19:08
CVE ID :CVE-2026-66752
Published : July 28, 2026, 4:20 p.m. | 32 minutes ago
Description :tiny-http through 0.12.0 contains an HTTP request smuggling vulnerability that allows remote attackers to desynchronize request framing by sending a Transfer-Encoding header with any value, including non-chunked codings, which causes the library to unconditionally apply chunk-decoding and discard Content-Length. Attackers can exploit the discrepancy between tiny_http's improper Transfer-Encoding parsing and a correctly-implemented front-end proxy to produce two distinct interpretations of a single byte stream, enabling request smuggling, and can additionally send non-chunked bodies with non-chunked Transfer-Encoding values to cause failed body reads that tie up connections and consume worker threads without signaling errors to clients.
Severity: 7.2 | HIGH
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