{"id":"UBUNTU-CVE-2026-71497","details":"jsoup is a Java library for working with real-world HTML. From 1.14.3 until 1.23.1, jsoup's HTML parser could incorrectly handle a malformed tag name ending in a control character, causing the tag to acquire the parsing behavior of a different element. When a custom Safelist permits certain raw-text elements, this misparsing can cause content that should remain inert text to be emitted as active markup after serialization, potentially resulting in cross-site scripting. jsoup's built-in Safelists are not affected. This issue is fixed in version 1.23.1.","modified":"2026-08-13T00:14:08Z","published":"2026-08-06T22:18:00Z","upstream":["CVE-2026-71497"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-71497"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-71497"},{"type":"REPORT","url":"https://github.com/jhy/jsoup/security/advisories/GHSA-pmhh-3w7g-xqp8"},{"type":"REPORT","url":"https://github.com/jhy/jsoup/issues/2538"},{"type":"REPORT","url":"https://github.com/jhy/jsoup/commit/92f1aca552548b484bc7d4b94c51e48b8e6eca70"},{"type":"REPORT","url":"https://github.com/jhy/jsoup/releases/tag/jsoup-1.23.1"}],"affected":[{"package":{"name":"jsoup","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.2-1","1.7.3-1","1.7.3-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.7.3-1ubuntu0.1~esm2","binary_name":"libjsoup-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.3-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.8.3-1","binary_name":"libjsoup-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.2-1","1.10.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libjsoup-java","binary_version":"1.10.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.2-2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.10.2-2","binary_name":"libjsoup-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.10.2-2","1.14.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjsoup-java","binary_version":"1.14.3-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjsoup-java","binary_version":"1.15.3-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}},{"package":{"name":"jsoup","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jsoup?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.15.3-1","1.15.3-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.15.3-1build1","binary_name":"libjsoup-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71497.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}