EIP-2026-102742

PRE-CVE

Squid - 'httpMakeVaryMark()' Remote Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-102742. PoCs published by tytusromekiatomek.

AI-analyzed exploit summary This exploit demonstrates a denial-of-service vulnerability in Squid by sending a malformed HTTP request with an oversized 'X-HEADSHOT' header. The vulnerability is triggered by the '%XX' pattern repeated 19000 times, causing the application to crash.

Description

Squid - 'httpMakeVaryMark()' Remote Denial of Service

Exploits (1)

exploitdb WORKING POC VERIFIED
by tytusromekiatomek · textdoslinux
https://www.exploit-db.com/exploits/38365

This exploit demonstrates a denial-of-service vulnerability in Squid by sending a malformed HTTP request with an oversized 'X-HEADSHOT' header. The vulnerability is triggered by the '%XX' pattern repeated 19000 times, causing the application to crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Squid 3.2.5
No auth needed
Prerequisites: Network access to the target Squid proxy
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026