{"id":"UBUNTU-CVE-2025-47905","details":"Varnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, because the product incorrectly permits CRLF to be skipped to delimit chunk boundaries.","modified":"2026-04-22T19:52:25.316672Z","published":"2025-05-13T22:15:00Z","upstream":["CVE-2025-47905"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-47905"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-47905"},{"type":"REPORT","url":"https://varnish-cache.org/security/VSV00016.html"},{"type":"REPORT","url":"https://github.com/varnishcache/varnish-cache/commit/b5f1faba6e8d9848cfe0cba566986e7e5cc5f65b"},{"type":"REPORT","url":"https://github.com/varnishcache/varnish-cache/commit/13904252859cf9848db5999b08c42d83a03ed812"},{"type":"REPORT","url":"https://github.com/varnishcache/varnish-cache/commit/3d9a9abff1c6734feea9d48d5852ccad7e7d0a42"},{"type":"REPORT","url":"https://github.com/varnishcache/varnish-cache/commit/00cb14931a53efafbdfec9843453fb1347bc9f59"}],"affected":[{"package":{"name":"varnish","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/varnish@3.0.5-2ubuntu0.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.4-1ubuntu1","3.0.4-1ubuntu2","3.0.5-1ubuntu2","3.0.5-2","3.0.5-2ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi1","binary_version":"3.0.5-2ubuntu0.1"},{"binary_name":"varnish","binary_version":"3.0.5-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}},{"package":{"name":"varnish","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/varnish@4.1.1-1ubuntu0.2+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.3-1","4.1.0-1","4.1.0-2","4.1.1-1","4.1.1-1ubuntu0.2","4.1.1-1ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.1.1-1ubuntu0.2+esm1","binary_name":"libvarnishapi1"},{"binary_name":"varnish","binary_version":"4.1.1-1ubuntu0.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}},{"package":{"name":"varnish","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/varnish@5.2.1-1ubuntu0.1+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.0.0-7.1","5.2.1-1","5.2.1-1ubuntu0.1","5.2.1-1ubuntu0.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi1","binary_version":"5.2.1-1ubuntu0.1+esm1"},{"binary_name":"varnish","binary_version":"5.2.1-1ubuntu0.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}},{"package":{"name":"varnish","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/varnish@6.2.1-2ubuntu0.2+esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.1-1","6.2.1-2","6.2.1-2ubuntu0.1~esm1","6.2.1-2ubuntu0.1~esm2","6.2.1-2ubuntu0.1","6.2.1-2ubuntu0.2","6.2.1-2ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi2","binary_version":"6.2.1-2ubuntu0.2+esm1"},{"binary_version":"6.2.1-2ubuntu0.2+esm1","binary_name":"varnish"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}},{"package":{"name":"varnish","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/varnish@6.6.1-1ubuntu0.2+esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.5.2-1","6.6.1-1","6.6.1-1ubuntu0.2","6.6.1-1ubuntu0.2+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi2","binary_version":"6.6.1-1ubuntu0.2+esm1"},{"binary_name":"varnish","binary_version":"6.6.1-1ubuntu0.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}},{"package":{"name":"varnish","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/varnish@7.1.1-1.1ubuntu1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.1-1.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libvarnishapi3","binary_version":"7.1.1-1.1ubuntu1"},{"binary_name":"varnish","binary_version":"7.1.1-1.1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-47905.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}