{"id":"UBUNTU-CVE-2026-25892","details":"Adminer is open-source database management software. Adminer v5.4.1 and earlier has a version check mechanism where adminer.org sends signed version info via JavaScript postMessage, which the browser then POSTs to ?script=version. This endpoint lacks origin validation and accepts POST data from any source. An attacker can POST version[] parameter which PHP converts to an array. On next page load, openssl_verify() receives this array instead of string and throws TypeError, returning HTTP 500 to all users. Upgrade to Adminer 5.4.2.","modified":"2026-05-20T16:24:47.858282902Z","published":"2026-02-09T22:16:00Z","upstream":["CVE-2026-25892"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-25892"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-25892"},{"type":"REPORT","url":"https://github.com/vrana/adminer/commit/21d3a3150388677b18647d68aec93b7850e457d3"},{"type":"REPORT","url":"https://github.com/vrana/adminer/releases/tag/v5.4.2"},{"type":"REPORT","url":"https://github.com/vrana/adminer/security/advisories/GHSA-q4f2-39gr-45jh"}],"affected":[{"package":{"name":"adminer","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.1-1","4.2.1-1ubuntu1","4.2.1-1ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.2.1-1ubuntu1+esm1","binary_name":"adminer"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-2","4.5.0-1","4.6.1-1","4.6.2-1","4.6.2-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_version":"4.6.2-1ubuntu0.1~esm1","binary_name":"adminer"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.2-1","4.7.4-1","4.7.5-1","4.7.6-1","4.7.6-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"adminer","binary_version":"4.7.6-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.7.9-2","4.8.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"adminer","binary_version":"4.8.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-1","4.8.1-1ubuntu1","4.8.1-2"],"ecosystem_specific":{"binaries":[{"binary_name":"adminer","binary_version":"4.8.1-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.1-4","5.2.1+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"adminer","binary_version":"5.2.1+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.json"}},{"package":{"name":"adminer","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/adminer?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.1+dfsg-1","5.3.0+dfsg-1","5.4.0+dfsg-1","5.4.1+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.4.1+dfsg-1","binary_name":"adminer"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25892.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:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}