{"id":"UBUNTU-CVE-2026-72709","details":"SPIP before version 4.4.18 contains a missing authorization vulnerability in sensitive actions under ecrire/action/ that allows unauthenticated attackers to invoke privileged actions by supplying only a valid CSRF nonce without any server-side permission check. Attackers can bypass template-level authorization guards through direct HTTP requests to invoke actions such as editer_auteur, enabling arbitrary account password rewrites including administrator accounts and resulting in full account takeover.","modified":"2026-09-16T14:01:43.628819883Z","published":"2026-09-11T17:18:00Z","upstream":["CVE-2026-72709"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-72709"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-72709"},{"type":"REPORT","url":"https://blog.lexfo.fr/casse-spip-sqli-to-rce.html"},{"type":"REPORT","url":"https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-4-18.html"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/spip-missing-authorization-via-ecrire-action-editer-auteur"}],"affected":[{"package":{"name":"spip","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.20-1","3.0.21-1","3.0.21-1ubuntu1","3.0.21-1ubuntu1+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"3.0.21-1ubuntu1+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}},{"package":{"name":"spip","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.4-3","3.1.4-4~deb9u3build0.18.04.1","3.1.4-4~deb9u5build0.18.04.1","3.1.4-4~deb9u5ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"3.1.4-4~deb9u5ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}},{"package":{"name":"spip","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.4-1","3.2.5-1","3.2.7-1","3.2.7-1ubuntu0.1","3.2.7-1ubuntu0.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"3.2.7-1ubuntu0.1+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}},{"package":{"name":"spip","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.11-3","3.2.12-1","4.0.2-1","4.0.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"4.0.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}},{"package":{"name":"spip","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.11+dfsg-1","4.1.12+dfsg-1","4.1.13+dfsg-1","4.1.15+dfsg-1","4.2.9+dfsg-2"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"4.2.9+dfsg-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}},{"package":{"name":"spip","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/spip?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.3+dfsg-1","4.4.6+dfsg-1","4.4.7+dfsg-1","4.4.8+dfsg-1","4.4.9+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_name":"spip","binary_version":"4.4.9+dfsg-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-72709.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}