{"id":"CVE-2026-100521","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-100521","generatedAt":"2026-10-28T07:40:58.760Z","title":"Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in the search plugin highlight parameter that performs no HTML or JavaScript escaping.","description":"Cotonti through 1.0.0 contains a reflected cross-site scripting vulnerability in the search plugin highlight parameter that performs no HTML or JavaScript escaping. Attackers can craft malicious links with injected JavaScript in the highlight parameter that executes in the browser of any visitor who opens the link, including administrators.","published":"2026-09-26T01:17:01.000Z","lastModified":"2026-09-29T18:17:05.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":5.1,"severity":"MEDIUM","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00201,"percentile":0.09847,"date":"2026-10-27","history":[{"date":"2026-09-26","score":0.00201,"percentile":0.08922}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-26T01:17:01.000Z","detail":{"score":"5.1","severity":"MEDIUM","publishedAt":"2026-09-26T01:17:00.517Z"},"summary":"New CVE, medium severity (CVSS 5.1)."}],"references":[{"url":"https://github.com/Cotonti/Cotonti","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.header.php","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Cotonti/Cotonti/blob/1.0.0/plugins/search/search.page.first.php","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Cotonti/Cotonti/issues/1907","source":"disclosure@vulncheck.com"},{"url":"https://github.com/Cotonti/Cotonti/pull/1908","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/cotonti-through-1.0.0-reflected-xss-via-search-highlight-parameter","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-100521","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}