{"id":"CVE-2026-73628","revision":"a2777705e45d4ae5acc61c6f21ab8ccd","records":[{"revision":"a2777705e45d4ae5acc61c6f21ab8ccd","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-73628","aliases":[],"title":"Serendipity 2.3.5 Reflected XSS via search clean-URL route","description":"Serendipity versions >= 2.3.5 and <= 2.6.0 contain a reflected cross-site scripting vulnerability in the search clean-URL route (/search/<term>). In include/functions_routing.inc.php serveSearch(), the sanitisation pipeline runs urldecode() after HTML-encoding, so a single URL-encoded HTML payload survives strip_tags() and htmlspecialchars() and is then decoded back into live HTML in the page. A crafted search link can execute arbitrary JavaScript in the victim's browser. Fixed in 2.6.1.","state":0,"publishedAt":"2026-08-13T11:28:26.954+00:00","modifiedAt":"2026-09-30T17:20:28.073+00:00","affected":[{"ecosystem":"Vendor product","name":"Serendipity","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"s9y\",\n                    \"product\": \"Serendipity\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"2.3.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"2.6.0\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.3,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/s9y/Serendipity/security/advisories/GHSA-6c2x-mjmq-vx4q","https://www.vulncheck.com/advisories/serendipity-reflected-xss-via-search-clean-url-route"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-73628","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-73628","identifiers":["CVE-2026-73628"]},"retained":false,"historicalAffected":[]}],"coverage":[]}