{"id":"UBUNTU-CVE-2026-49342","details":"YARD is a documentation generation tool for the Ruby programming language. Prior to version 0.9.44, YARD's static cache lookup reads a request path before the router's path cleanup runs. When a server is configured with a document root, a traversal path such as `/../yard-cache-secret.html` is joined against that root and can return a readable sibling `.html` file outside the intended static tree. Version 0.9.44 patches the issue.","modified":"2026-06-24T11:01:41.918591121Z","published":"2026-06-19T20:16:00Z","upstream":["CVE-2026-49342"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-49342"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-49342"},{"type":"REPORT","url":"https://github.com/lsegal/yard/security/advisories/GHSA-pxcc-8665-phx8"},{"type":"REPORT","url":"https://github.com/lsegal/yard/commit/f78c19f0dd33a407085b4ed181bb60c0aa0078b4"}],"affected":[{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.7.6-1","0.8.7.6+git20160220-3","0.8.7.6+git20160220-3ubuntu0.1~esm1","0.8.7.6+git20160220-3ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.8.7.6+git20160220-3ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.9-1","0.9.12-1","0.9.12-1ubuntu3","0.9.12-2","0.9.12-2ubuntu0.1~esm1","0.9.12-2ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.9.12-2ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.16-1","0.9.20-1","0.9.24-1","0.9.24-1+deb11u1build0.20.04.1","0.9.24-1+deb11u1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.9.24-1+deb11u1ubuntu0.1~esm1","binary_name":"yard"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.24-1","0.9.26-1","0.9.26-1ubuntu0.1","0.9.26-1ubuntu0.1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.9.26-1ubuntu0.1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.28-2","0.9.34-1","0.9.35-1","0.9.36-1","0.9.36-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.9.36-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/yard?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.37-1"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.9.37-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}},{"package":{"name":"yard","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/yard?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.37-1","0.9.37-1build1","0.9.38-1","0.9.38-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"yard","binary_version":"0.9.38-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49342.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}