{"id":"CVE-2023-35133","aliases":["BIT-moodle-2023-35133","GHSA-xxp4-mf4h-6cwm"],"url":"https://o3.security/vulnerability/CVE-2023-35133","summary":"Moodle: ssrf risk due to insufficient check on the curl blocked hosts","details":"An issue in the logic used to check 0.0.0.0 against the cURL blocked hosts lists resulted in an SSRF risk. This flaw affects Moodle versions 4.2, 4.1 to 4.1.3, 4.0 to 4.0.8, 3.11 to 3.11.14, 3.9 to 3.9.21 and earlier unsupported versions.","published":"2023-06-22T00:00:00Z","modified":"2026-08-12T03:51:44.768513426Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.2.1"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.1.4"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"4.0.9"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.11.15"},{"ecosystem":"Packagist","name":"moodle/moodle","fixedVersion":"3.9.22"}],"fix":null,"references":[{"type":"WEB","url":"https://git.moodle.org"},{"type":"WEB","url":"https://moodle.org/mod/forum/discuss.php?d=447831"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/35xxx/CVE-2023-35133.json"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC/"},{"type":"ADVISORY","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-35133"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2214373"},{"type":"PACKAGE","url":"https://github.com/moodle/moodle"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7A72KX4WU6GK2CX4TKYFGFASPKOEOJFC"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/I5QAEAGJ44NVXLAJFJXKARKC45OGEDXT"},{"type":"WEB","url":"http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-78215"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.768513426Z"}}