SEPTEMBER 15, 2026
Live Feed
Back to database
Case File

CVE-2026-66753

LOW · CVSS 3.7 EPSS 0.22% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-28 · Last synced 2026-08-27

CyberRota Analysis

AI-Generated

The vulnerability allows for HTTP header injection in tiny-http versions up to 0.12.0, enabling attackers to inject carriage return and line feed bytes into header values due to inadequate validation. This can lead to various attacks, including response splitting, cache poisoning, and session fixation, particularly affecting systems that are tolerant of line-feed characters. Organizations using affected versions of tiny-http should prioritize remediation to mitigate potential exploitation risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-66753
Severity
LOW
CVSS
3.7
EPSS
0.22%

Original NVD Description

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.