{"id":"UBUNTU-CVE-2026-26477","details":"An issue in Dokuwiki v.2025-05-14b \"Librarian\" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file","modified":"2026-05-20T16:24:50.237743064Z","published":"2026-04-03T15:16:00Z","upstream":["CVE-2026-26477"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-26477"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-26477"},{"type":"REPORT","url":"https://github.com/Hebing123/cve/issues/94"}],"affected":[{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20140929.d-1","0.0.20140929.d-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"0.0.20140929.d-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20160626.a-2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0.20160626.a-2","binary_name":"dokuwiki"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20180422.a-2"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"0.0.20180422.a-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20180422.a-2.1"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"0.0.20180422.a-2.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.20220731.a-2"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"0.0.20220731.a-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2024-02-06b+dfsg-4","2024-02-06b+dfsg-9"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"2024-02-06b+dfsg-9"},{"binary_name":"dokuwiki-farm","binary_version":"2024-02-06b+dfsg-9"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.json"}},{"package":{"name":"dokuwiki","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/dokuwiki?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2024-02-06b+dfsg-9","2025-05-14.a+dfsg-4","2025-05-14.b+dfsg-1","2025-05-14.b+dfsg-2","2025-05-14.b+dfsg-3","2025-05-14.b+dfsg-4","2025-05-14.b+dfsg-5"],"ecosystem_specific":{"binaries":[{"binary_name":"dokuwiki","binary_version":"2025-05-14.b+dfsg-5"},{"binary_version":"2025-05-14.b+dfsg-5","binary_name":"dokuwiki-farm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26477.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":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}