Vulnerability in Tiny-http
CVE-2026-66752
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 l…
Vulnerability class: HTTP Request Smuggling
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Tiny-http — versions 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-66752?
- CVE-2026-66752 is a medium-severity vulnerability in Tiny-http, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.4/10. Published 2026-07-28.
- How severe is CVE-2026-66752?
- Medium severity. CVSS v3 base score is 5.4 out of 10.