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

A flaw was found in Squid. Due to improper input validation, an out-of-bounds read can occur in the FTP gateway. This issue allows an authenticated and trusted client to read memory from random transactions when accessing a misbehaving FTP server using the Squid gateway feature. Mitigation When F...

CVE-2026-50012

A flaw was found in Squid. Due to improper input validation, a heap-based buffer overflow can occur when processing cache digests. This issue allows a trusted server to cause a denial of service when sending specially crafted replies to cachedigest request messages. Mitigation To mitigate this...

Astra Linux – Vulnerability in Squid

Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid was vulnerable to out-of-bound reads when handling ICP traffic. This issue allowed a remote attacker to access small amounts of memory that might contain sensitive information, by responding with...

Astra Linux – Vulnerability in Squid

Squid is a caching proxy for the Web. Prior to version 7.5, due to heap use-after-free issues, Squid was vulnerable to Denial of Service attacks when handling ICP traffic. This vulnerability allowed a remote attacker to carry out a reliable and repeatable Denial of Service attack on the Squid...

Astra Linux – Vulnerability in Squid

Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resources during their expected lifetime and heap Use-After-Free bugs, Squid was vulnerable to Denial of Service attacks when handling ICP traffic. This issue allowed a remote attacker to carry out a reliable...

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...

[SECURITY] [DSA 6360-1] squid security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6360-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 21, 2026 https://www.debian.org/security/faq -...

Debian dsa-6360 : squid - security update

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6360 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6360-1 [email protected] https://www.debian.org/securit...

ROOT-OS-DEBIAN-12-CVE-2026-47729 CVE-2026-47729 in rootio-squid - Patched by Root

Root has patched CVE-2026-47729 in the rootio-squid package for Root:Debian:12. Multiple fixed versions available...

ROOT-OS-DEBIAN-13-CVE-2026-47729 CVE-2026-47729 in rootio-squid - Patched by Root

Root has patched CVE-2026-47729 in the rootio-squid package for Root:Debian:13. Multiple fixed versions available...

OPENSUSE-SU-2026:11069-1 squid-7.6-1.1 on GA media

These are all security issues fixed in the squid-7.6-1.1 package on the GA media of openSUSE Tumbleweed...

Squid < 7.6 Heap-based Buffer Overflow

The version of Squid on the remote host is prior to 7.6. It is, therefore, affected by a heap-based buffer overflow vulnerability: - Due to an Improper Input Validation bug, Squid is vulnerable to a Heap-based Buffer Overflow attack against cache digests. This problem allows a trusted server to...

Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Squid vulnerabilities (USN-8435-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8435-1 advisory. It was discovered that Squid incorrectly handled FTP gateway processing under certain circumstances, which could result i...

Friday Squid Blogging: Squid-Inspired Fluid Pump

This fluid pump was inspired by the way squids propel themselves through the water. As usual, you can also use this squid post to talk about the security stories in the news that I haven't covered. Blog moderation policy...

Linux Distros Unpatched Vulnerability : CVE-2026-47729

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Debian Linux - squid - None Ubuntu Linux - Out-of-bounds Read attack against the FTP gateway CVE-2026-47729 Note that Nessus relies on the presence of the packa...

PT-2026-49606

Name of the Vulnerable Software and Affected Versions squid-cache Squid affected versions not specified Description A heap-based buffer overflow occurs during the processing of cache digests. A heap-based buffer overflow is a memory corruption issue where a program writes more data to a buffer...

Linux Distros Unpatched Vulnerability : CVE-2026-50012

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Due to an Improper Input Validation bug, Squid is vulnerable toa Heap-based Buffer Overflow attack against cache digests. This problem allows a trusted server t...

TencentOS Server 4: squid (TSSA-2026:0346)

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0346 advisory. Package updates are available for TencentOS Server 4 that fix the following vulnerabilities...

Friday Squid Blogging: Another Squid

Someone named "Squid" seems to be a "West Country legend." As usual, you can also use this squid post to talk about the security stories in the news that I haven't covered. Blog moderation policy...