{"id":"CVE-2026-113683","summary":"VPL for Moodle before 5.0.0 Reflected XSS via similarity/diff.php filename","details":"VPL (Virtual Programming Lab) for Moodle before 5.0.0 contains a reflected cross-site scripting vulnerability that allows remote attackers to inject script via unencoded filename1/filename2 parameters in similarity/diff.php. Attackers can craft a diff.php link with a JavaScript payload that runs when a user holding mod/vpl:similarity opens it, performing actions or disclosing data under their session.","modified":"2026-10-21T02:56:01.967994409Z","published":"2026-10-20T15:40:43.190Z","database_specific":{"cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113683.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113683.json"},{"type":"PACKAGE","url":"https://github.com/jcrodriguez-dis/moodle-mod_vpl"},{"type":"ARTICLE","url":"https://github.com/jcrodriguez-dis/moodle-mod_vpl/blob/V4.5.0/similarity/diff.class.php#L412-L419"},{"type":"FIX","url":"https://github.com/jcrodriguez-dis/moodle-mod_vpl/commit/5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"},{"type":"ADVISORY","url":"https://github.com/jcrodriguez-dis/moodle-mod_vpl/releases/tag/V5.0.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-113683"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/vpl-for-moodle-before-5.0.0-reflected-xss-via-similarity-diff-php-filename"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jcrodriguez-dis/moodle-mod_vpl","events":[{"introduced":"0"},{"fixed":"b6e590a74859a65d8b3168ea9d54b5517407ed9f"},{"fixed":"5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"fixed":"5.0.0"}]},{"source":"REFERENCES_COMMIT","range":[{"fixed":"5dd7fe00df2816b692f8ea262c6fa8cdee0b26b7"}]},{"original_tag":"V5.0.0","range":[{"fixed":"b6e590a74859a65d8b3168ea9d54b5517407ed9f"}],"source":"REFERENCES_TAG"}]}}],"versions":["V4.5.0","V4.4.2","V4.4.2RC2","V4.4.2RC1","V4.4.1","V4.4.0","V4.3.2","V4.3.1","V4.3.0","V4.2.5","V4.2.4","V4.2.3","V4.2.2","V4.2.1","V4.2.0","v4.1.1","v4.1.0","v4.0.1","V4.0.0","v3.1.4","v3.1.3","V3.1.2","v3.1.1","3.0.1","3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113683.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"}]}