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...

CVE-2026-47729

Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway src/clients/FtpGateway.cc, Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed...

K000162296: Squid-Proxy vulnerability CVE-2026-47729

Security Advisory Description This ID has been reserved by a CNA. This candidate has been reserved by a CVE Numbering Authority CNA. This record will be updated by the assigning CNA once details are available. Learn more about the Reserved state here. CVE-2026-47729 Impact There is no impact; F5...

The vulnerability of the strchr() function in the Squid proxy server allows a hacker to gain unauthorized access to protected information.

The vulnerability of the strchr function in the Squid proxy server is related to the escape from memory buffer boundaries. Exploiting this vulnerability could allow a remote attacker to gain unauthorized access to protected information...

29-Year-Old Squid Proxy Bug 'Squidbleed' Can Leak Cleartext HTTP Requests

A heap over-read in the Squid web proxy can leak another user's cleartext HTTP request, including any credentials or session tokens it carries, to anyone already allowed to send traffic through the same proxy. The bug traces to a 1997 FTP-parsing change and is still live in Squid's default...

The vulnerability of the Squid proxy server, related to reading beyond the buffer in memory, allows attackers to cause a service failure.

The vulnerability of the Squid proxy server is related to reading data beyond the buffer in memory. Exploiting this vulnerability can allow a remote attacker to cause a service failure...

Important: Red Hat Security Advisory: squid:4 security update

An update for the squid:4 module is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service. Red Hat Product Security has rated this...

The vulnerability of the Squid proxy server, related to improper blocking of resources, allows a violator to trigger a service failure.

The vulnerability of the Squid proxy server is related to improper blocking of resources. Exploiting this vulnerability can allow a remote attacker to cause service interruptions...

The vulnerability of the Squid proxy server, related to the use of memory after it is freed, allows a hacker to execute arbitrary code.

The vulnerability of the Squid proxy server is related to the use of memory after it is freed. Exploiting this vulnerability allows a remote attacker to execute arbitrary code...

[SECURITY] Fedora 43 Update: squid-7.5-1.fc43

Squid is a high-performance proxy caching server for Web clients, supporting FTP and HTTP data objects. Unlike traditional caching software, Squid handles all requests in a single, non-blocking, I/O-driven process. Squid keeps meta data and especially hot objects cached in RAM, caches DNS lookups...

RHEL 9 : squid (RHSA-2026:10256)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:10256 advisory. Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Deni...

Important: Red Hat Security Advisory: squid security update

An update for squid is now available for Red Hat Enterprise Linux 9.6 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for...

RLSA-2026:8119 Important: squid security update

Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling CVE-2026-33526 Squid: Squid: Denial of Service via crafted ICP traffic CVE-2026-32748 For...

Important: squid

Issue Overview: Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable a...

CLSA-2026-1775209032 squid: Fix of 2 CVEs

CVE-2026-33515: fix validation of packet sizes and URLs in ICP - CVE-2026-33526: fix escaping malformed URI twice when sending ICP errors...

RLSA-2026:6301 Important: squid security update

Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling CVE-2026-33526 Squid: Squid: Denial of Service via crafted ICP traffic CVE-2026-32748 For...

Important: squid security update

Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling CVE-2026-33526 Squid: Squid: Denial of Service via crafted ICP traffic CVE-2026-32748 For...

ALSA-2026:6301 Important: squid security update

Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects. Security Fixes: squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling CVE-2026-33526 Squid: Squid: Denial of Service via crafted ICP traffic CVE-2026-32748 For...

Squid has issues in ICP message handling

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CVE-2026-33526

Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP...