{"id":"CVE-2026-32893","summary":"Chamilo LMS has Reflected XSS via Unsanitized http_build_query() in Exercise Question List Pagination","details":"Chamilo LMS is a learning management system. Prior to 2.0.0-RC.3, a Reflected Cross-Site Scripting (XSS) vulnerability in the exercise question list admin panel allows an attacker to execute arbitrary JavaScript in an authenticated teacher's browser. The pagination code merges all $_GET parameters via array_merge() and outputs the result via http_build_query() directly into HTML href attributes without htmlspecialchars() encoding. This vulnerability is fixed in 2.0.0-RC.3.","aliases":["GHSA-37jh-g64j-88mc"],"modified":"2026-07-08T08:12:26.341234487Z","published":"2026-04-10T17:42:24.220Z","database_specific":{"cna_assigner":"GitHub_M","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32893.json","cwe_ids":["CWE-79"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32893.json"},{"type":"ADVISORY","url":"https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-37jh-g64j-88mc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32893"},{"type":"FIX","url":"https://github.com/chamilo/chamilo-lms/commit/72bc403f89b1ebb73a139f8f6cf0478857592276"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/chamilo/chamilo-lms","events":[{"introduced":"7dacdc0bbed7f5d2c6d000c2c062bd4eaa48332b"},{"fixed":"72bc403f89b1ebb73a139f8f6cf0478857592276"}],"database_specific":{"extracted_events":[{"introduced":"2.0.0-alpha.1"},{"fixed":"2.0.0-RC.3"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v2.0.0-RC.2","v2.0.0-RC.1","v2.0.0-beta.3","v2.0.0-beta.1","v2.0.0-alpha.5","v2.0.0-alpha.4","v2.0.0-alpha.3","v2.0.0-alpha.2","v2.0.0-alpha.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-32893.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}