{"id":"CVE-2026-23929","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-23929","generatedAt":"2026-10-28T02:56:35.387Z","title":"Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps.","description":"Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.","published":"2026-08-18T13:17:21.000Z","lastModified":"2026-09-08T15:10:21.000Z","status":"Analyzed","sourceIdentifier":"security@zabbix.com","cvss":{"version":"4.0","score":8.5,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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-1321"],"affected":["zabbix/zabbix"],"epss":{"score":0.00258,"percentile":0.17328,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://support.zabbix.com/browse/ZBX-28068","tags":["Vendor Advisory"],"source":"security@zabbix.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23929","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."}