CVE-2016-2569

Hello there, Thank you for reading my first blog entry. Today we will go with exploit creation for one of the open-source tool Squid Caching proxy server. So What Is Squido? Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response time...

squid

SQUID Web Proxy Cache http://www.squid-cache.org/ Copyright C 1996-2026 The Squid Software Foundation and contributors Squid software is distributed under GPLv2+ license and includes contributions from numerous individuals and organizations. Please see the COPYING and CONTRIBUTORS files for...

CVE-2018-19131

CVE-2018-19131 Demo Author: Jonathan M. Wilbur Copyright Year: 2018 License: MIT License Do not do anything illegal with this. This is not malware. This is just a proof of concept. This is a demo of CVE-2018-19131, which runs in a Docker Compose app. This library builds Squid version 3.5.27, whic...

CVE-2026-47729

🦑 CVE-2026-47729 - Squidbleed ⚠️ Heartbleed's ancient cousin, hiding in Squid since 1997. ✨ Features Single-file PoC — Zero dependencies Malicious FTP server mimicking NetWare banner + truncated LIST response Real-time detection and decoding of Basic Auth + Bearer tokens Multi-threaded heap...

CVE-2025-62168

CVE-2025-62168 — Squid Proxy Token Leak PoC The author assumes no liability for misuse or damage caused by this tool. Research is provided strictly for educational and defensive purposes. Description This repository contains a Proof-of-Concept PoC for CVE-2025-62168 , an information-disclosure fl...

CVE-2025-62168

CVE-2025-62168 Squid Proxy Information Disclosure in Error handling Scanner Detection & PoC "Due to a failure to redact HTTP Authentication credentials Squid is vulnerable to an Information Disclosure attack. Severity: This problem allows a script to bypass Browser security protections and learn...

squidmagic

Squidmagic is a tool designed to analyze a web-based network traffic to detect central command and control C&C servers and Malicious site, using Squid proxy server and Spamhaus. Install dependencies pip install -r requirements.txt Usage python squidmagic.py /squid/access.log | | | | / |/ | | | | ...

CVE-2025-62168

CVE-2025-62168 Squid Proxy Information Disclosure in Error handling Scanner Detection & PoC "Due to a failure to redact HTTP Authentication credentials Squid is vulnerable to an Information Disclosure attack. Severity: This problem allows a script to bypass Browser security protections and learn...

Blackash-CVE-2025-54574

🛑 CVE-2025-54574 — Heap Buffer Overflow in Squid ≤ 6.3 🛑 Severity: Critical CVSS 9.3 Affected Software: Squid Proxy versions 6.3 and earlier Vulnerability Type: Heap-based buffer overflow Discovered in: URN Uniform Resource Name processing Impact: Possible remote code execution or denial-of-servi...

CVE-2025-54574-Squid-Heap-Buffer-Overflow

CVE-2025-54574-Squid-Heap-Buffer-Overflow Vulnerability Found on Squid Proxy. CVE-2025-54574 — Critical Heap Buffer Overflow in Squid Proxy This repository documents the discovery, analysis, and responsible disclosure process of CVE-2025-54574, a critical heap-based buffer overflow in Squid 6.4...

Squid Proxy - HTTP Authentication Credentials Disclosure

Squid versions prior to 7.2 fail to redact HTTP authentication credentials in error page responses. The Authorization header value is embedded in plain text inside the mailto: diagnostic block when Squid generates an error page e.g. ERRDNSFAIL. id: CVE-2025-62168 info: name: Squid Proxy - HTTP...

Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Squid vulnerabilities (USN-8941-1)

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8941-1 advisory. It was discovered that Squid incorrectly handled certain HTTP Transfer- Encoding headers. An attacker cou...

USN-8941-1 squid, squid3 vulnerabilities

It was discovered that Squid incorrectly handled certain HTTP Transfer- Encoding headers. An attacker could possibly use this issue to perform HTTP request smuggling attacks, bypass security mechanisms, or poison web caches. CVE-2026-61642 It was discovered that Squid incorrectly handled certain...

USN-8941-1: Squid vulnerabilities

It was discovered that Squid incorrectly handled certain HTTP Transfer- Encoding headers. An attacker could possibly use this issue to perform HTTP request smuggling attacks, bypass security mechanisms, or poison web caches. CVE-2026-61642 It was discovered that Squid incorrectly handled certain...

AlmaLinux 9.2 [TuxCare] Security Update: squid Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2026:1792517219)

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1792517219 advisory. - Squid is a caching proxy for the Web. From 3.3.0.1 to before 7.6, due to an improper enforcement of behavioral workflow bug, Squid...

Astra Linux – Vulnerability in Squid

Squid encounters issues with the improper handling of ASN.1 encoding for long SNMP OIDs in version 7.1. This issue occurs in the asnbuildobjid function within lib/snmplib/asn1.c...

Astra Linux – Vulnerability in Squid

A vulnerability was discovered in Squid before versions 4.15 and 5.x before version 5.0.6. Due to incorrect parser validation, this vulnerability allows for a Denial of Service attack against the Cache Manager API. This enables a trusted client to trigger memory leaks, which over time can lead to...

Astra Linux – Vulnerability in Squid

A issue was discovered in Squid 4.x before 4.15, and in 5.x before 5.0.6. If a remote server sends a certain response header via HTTP or HTTPS, it can lead to a denial of service. This header can potentially appear in legitimate network traffic...

SUSE CVE-2026-61642

Squid is a caching proxy for the Web. From 3.3.0.1 to before 7.6, due to an improper enforcement of behavioral workflow bug, Squid is vulnerable to a Request Smuggling attack against HTTP/1.1 Transfer-Encoding. HTTP header parsing src/HttpHeader.cc accepted the bare Transfer-Encoding: identity...

AZL-108531 CVE-2026-61642 affecting package squid 6.13-5

Squid is a caching proxy for the Web. From 3.3.0.1 to before 7.6, due to an improper enforcement of behavioral workflow bug, Squid is vulnerable to a Request Smuggling attack against HTTP/1.1 Transfer-Encoding. HTTP header parsing src/HttpHeader.cc accepted the bare Transfer-Encoding: identity...