HTTP Response Splitting Affecting rust-tiny-http package, versions *


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.3% (21st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RUSTTINYHTTP-18384571
  • published29 Jul 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

CVE-2026-66753  (opens in a new tab)
CWE-113  (opens in a new tab)

How to fix?

There is no fixed version for Debian:unstable rust-tiny-http.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rust-tiny-http package and not the rust-tiny-http package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1