Important: Red Hat Security Advisory: squid security update

An update for squid is now available for Red Hat Enterprise Linux 9. 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 each vulnerability from the...

squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling

A flaw was found in Squid. A remote attacker can exploit a heap Use-After-Free vulnerability when handling ICP Internet Cache Protocol traffic. This allows them to perform a reliable and repeatable Denial of Service DoS attack, making the Squid service unavailable. This attack is limited to...

Squid: Squid: Denial of Service via crafted ICP traffic

A flaw was found in Squid. A remote attacker can exploit this vulnerability by sending specially crafted ICP Internet Cache Protocol traffic. This can lead to a Denial of Service DoS due to premature resource release and use-after-free vulnerabilities. This attack is possible in Squid deployments...

CLSA-2026-1774947708 squid: Fix of 3 CVEs

CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS - CVE-2026-33515: fix out-of-bounds read in ICP message handling leaking sensitive information - CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing Use-After-Free DoS...

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...

CLSA-2026-1774877548 squid: Fix of 3 CVEs

CVE-2026-33526: fix heap use-after-free due to double rfc1738escape in ICP error handling - CVE-2026-33515: fix validation of ICP packet sizes and URLs to prevent out-of-bounds reads - CVE-2026-32748: fix HttpRequest use-after-free in ICP v3 query handling...

CLSA-2026-1774874340 squid: Fix of 3 CVEs

CVE-2026-33526: fix heap use-after-free due to double rfc1738escape in ICP error handling - CVE-2026-33515: fix validation of ICP packet sizes and URLs to prevent out-of-bounds reads - CVE-2026-32748: fix HttpRequest use-after-free in ICP v3 query handling...

CLSA-2026-1774622460 squid: Fix of 3 CVEs

CVE-2025-59362: fix ASN.1 encoding of long SNMP OIDs - CVE-2026-33526: do not escape malformed URI twice when sending ICP errors - CVE-2026-33515: fix validation of ICP packet sizes and URLs...

Squid has Denial of Service in ICP Response handling

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Squid has issues in ICP message handling

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Squid vulnerable to Denial of Service in ICP Request handling

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Squid < 7.5 Multiple Vulnerabilities

The version of Squid on the remote host is prior to 7.5. It is, therefore, affected by multiple vulnerabilities: - Due to heap Use-After-Free, Squid is vulnerable to Denial of Service when handling ICP traffic. This attack is limited to Squid deployments that explicitly enable ICP support...

CVE-2026-33515

A flaw was found in Squid, a caching proxy for the Web. Due to improper input validation, Squid is vulnerable to an out-of-bounds read when handling Internet Cache Protocol ICP traffic. A remote attacker can exploit this by sending invalid ICP requests, potentially receiving small amounts of memo...

CVE-2026-33526

A flaw was found in Squid. A remote attacker can exploit a heap Use-After-Free vulnerability when handling ICP Internet Cache Protocol traffic. This allows them to perform a reliable and repeatable Denial of Service DoS attack, making the Squid service unavailable. This attack is limited to...

CVE-2026-32748

A flaw was found in Squid. A remote attacker can exploit this vulnerability by sending specially crafted ICP Internet Cache Protocol traffic. This can lead to a Denial of Service DoS due to premature resource release and use-after-free vulnerabilities. This attack is possible in Squid deployments...

CVE-2026-33515

Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding...

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...

CVE-2026-32748

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 and repeatable...

DEBIAN-CVE-2026-32748

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 and repeatable...

UBUNTU-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...