CVE-2026-66753 — tiny-http 0.12.0 HTTP Response Splitting via Header Injection
tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return (0x0D) and line feed (0x0A) bytes into HTTP header value…
Published: 2026-07-28 · CVSS: 6.3 · CVSS 4.0
tiny-http through 0.12.0 contains an HTTP header injection vulnerability that allows attackers to inject carriage return (0x0D) and line feed (0x0A) bytes into HTTP header values on both request and response sides due to insufficient validation in header parsing and serialization. Attackers can exploit this injection primitive to perform response splitting, cache poisoning, session fixation via Set-Cookie injection, security header override, and request smuggling against line-feed-tolerant backends.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7