{"id":"UBUNTU-CVE-2025-62168","details":"Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.","modified":"2026-02-04T05:34:35.672809Z","published":"2025-10-21T00:00:00Z","related":["USN-7845-1"],"upstream":["CVE-2025-62168"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-62168"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-62168"},{"type":"REPORT","url":"https://github.com/squid-cache/squid/security/advisories/GHSA-c8cc-phh7-xmxr"},{"type":"REPORT","url":"https://github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443f"},{"type":"REPORT","url":"https://github.com/squid-cache/squid/commit/0951a0681011dfca3d78c84fd7f1e19c78a4443f"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7845-1"}],"affected":[{"package":{"name":"squid3","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.12-1ubuntu7.16+esm5?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.12-1ubuntu7.16+esm5"}]}],"versions":["3.3.8-1ubuntu16","3.3.8-1ubuntu17","3.5.12-1ubuntu6","3.5.12-1ubuntu7","3.5.12-1ubuntu7.1","3.5.12-1ubuntu7.2","3.5.12-1ubuntu7.3","3.5.12-1ubuntu7.4","3.5.12-1ubuntu7.5","3.5.12-1ubuntu7.6","3.5.12-1ubuntu7.7","3.5.12-1ubuntu7.8","3.5.12-1ubuntu7.9","3.5.12-1ubuntu7.10","3.5.12-1ubuntu7.11","3.5.12-1ubuntu7.12","3.5.12-1ubuntu7.13","3.5.12-1ubuntu7.14","3.5.12-1ubuntu7.15","3.5.12-1ubuntu7.16","3.5.12-1ubuntu7.16+esm1","3.5.12-1ubuntu7.16+esm2","3.5.12-1ubuntu7.16+esm3","3.5.12-1ubuntu7.16+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"squid","binary_version":"3.5.12-1ubuntu7.16+esm5"},{"binary_name":"squid-cgi","binary_version":"3.5.12-1ubuntu7.16+esm5"},{"binary_name":"squid-common","binary_version":"3.5.12-1ubuntu7.16+esm5"},{"binary_name":"squid-purge","binary_version":"3.5.12-1ubuntu7.16+esm5"},{"binary_name":"squid3","binary_version":"3.5.12-1ubuntu7.16+esm5"},{"binary_name":"squidclient","binary_version":"3.5.12-1ubuntu7.16+esm5"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62168.json"}},{"package":{"name":"squid3","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/squid3@3.5.27-1ubuntu1.14+esm4?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.27-1ubuntu1.14+esm4"}]}],"versions":["3.5.23-5ubuntu1","3.5.23-5ubuntu2","3.5.27-1ubuntu1","3.5.27-1ubuntu1.1","3.5.27-1ubuntu1.2","3.5.27-1ubuntu1.3","3.5.27-1ubuntu1.4","3.5.27-1ubuntu1.5","3.5.27-1ubuntu1.6","3.5.27-1ubuntu1.7","3.5.27-1ubuntu1.8","3.5.27-1ubuntu1.9","3.5.27-1ubuntu1.10","3.5.27-1ubuntu1.11","3.5.27-1ubuntu1.12","3.5.27-1ubuntu1.13","3.5.27-1ubuntu1.14","3.5.27-1ubuntu1.14+esm1","3.5.27-1ubuntu1.14+esm2","3.5.27-1ubuntu1.14+esm3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"squid","binary_version":"3.5.27-1ubuntu1.14+esm4"},{"binary_version":"3.5.27-1ubuntu1.14+esm4","binary_name":"squid-cgi"},{"binary_version":"3.5.27-1ubuntu1.14+esm4","binary_name":"squid-common"},{"binary_name":"squid-purge","binary_version":"3.5.27-1ubuntu1.14+esm4"},{"binary_name":"squid3","binary_version":"3.5.27-1ubuntu1.14+esm4"},{"binary_name":"squidclient","binary_version":"3.5.27-1ubuntu1.14+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62168.json"}},{"package":{"name":"squid","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/squid@4.10-1ubuntu1.13+esm1?arch=source&distro=esm-infra/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.10-1ubuntu1.13+esm1"}]}],"versions":["4.8-1ubuntu2","4.8-1ubuntu3","4.9-2ubuntu1","4.9-2ubuntu2","4.9-2ubuntu3","4.9-2ubuntu4","4.10-1ubuntu1","4.10-1ubuntu1.1","4.10-1ubuntu1.2","4.10-1ubuntu1.3","4.10-1ubuntu1.4","4.10-1ubuntu1.5","4.10-1ubuntu1.6","4.10-1ubuntu1.7","4.10-1ubuntu1.8","4.10-1ubuntu1.9","4.10-1ubuntu1.10","4.10-1ubuntu1.11","4.10-1ubuntu1.12","4.10-1ubuntu1.13"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"squid","binary_version":"4.10-1ubuntu1.13+esm1"},{"binary_name":"squid-cgi","binary_version":"4.10-1ubuntu1.13+esm1"},{"binary_name":"squid-common","binary_version":"4.10-1ubuntu1.13+esm1"},{"binary_name":"squid-purge","binary_version":"4.10-1ubuntu1.13+esm1"},{"binary_name":"squidclient","binary_version":"4.10-1ubuntu1.13+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62168.json"}},{"package":{"name":"squid","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/squid@5.9-0ubuntu0.22.04.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.9-0ubuntu0.22.04.4"}]}],"versions":["4.13-10ubuntu5","5.2-1ubuntu1","5.2-1ubuntu3","5.2-1ubuntu4","5.2-1ubuntu4.1","5.2-1ubuntu4.2","5.2-1ubuntu4.3","5.7-0ubuntu0.22.04.1","5.7-0ubuntu0.22.04.2","5.7-0ubuntu0.22.04.3","5.7-0ubuntu0.22.04.4","5.9-0ubuntu0.22.04.1","5.9-0ubuntu0.22.04.2","5.9-0ubuntu0.22.04.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"squid","binary_version":"5.9-0ubuntu0.22.04.4"},{"binary_name":"squid-cgi","binary_version":"5.9-0ubuntu0.22.04.4"},{"binary_name":"squid-common","binary_version":"5.9-0ubuntu0.22.04.4"},{"binary_name":"squid-openssl","binary_version":"5.9-0ubuntu0.22.04.4"},{"binary_version":"5.9-0ubuntu0.22.04.4","binary_name":"squid-purge"},{"binary_version":"5.9-0ubuntu0.22.04.4","binary_name":"squidclient"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62168.json"}},{"package":{"name":"squid","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/squid@6.13-0ubuntu0.24.04.3?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13-0ubuntu0.24.04.3"}]}],"versions":["6.1-2ubuntu1","6.1-2ubuntu2","6.5-1ubuntu1","6.5-1ubuntu2","6.5-1ubuntu3","6.6-1ubuntu4","6.6-1ubuntu5","6.6-1ubuntu5.1","6.10-0ubuntu0.24.04.1","6.13-0ubuntu0.24.04.1","6.13-0ubuntu0.24.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"squid","binary_version":"6.13-0ubuntu0.24.04.3"},{"binary_name":"squid-cgi","binary_version":"6.13-0ubuntu0.24.04.3"},{"binary_version":"6.13-0ubuntu0.24.04.3","binary_name":"squid-common"},{"binary_version":"6.13-0ubuntu0.24.04.3","binary_name":"squid-openssl"},{"binary_version":"6.13-0ubuntu0.24.04.3","binary_name":"squid-purge"},{"binary_name":"squidclient","binary_version":"6.13-0ubuntu0.24.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-62168.json"}},{"package":{"name":"squid","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/squid@6.13-1ubuntu4.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.13-1ubuntu4.1"}]}],"versions":["6.13-1ubuntu1","6.13-1ubuntu2","6.13-1ubuntu3","6.13-1ubuntu4"],"ecosystem_specific":{"availability":"No subscription 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