{"id":"CVE-2026-23929","title":"Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps","summary":"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 trave…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-1321"],"vendor":"zabbix","product":"zabbix","affected":["zabbix >= 6.0.0, < 6.0.46","zabbix >= 7.0.0, < 7.0.25","zabbix >= 7.4.0, < 7.4.9"],"patched":["zabbix 7.4.9"],"published":"2026-08-18","updated":"2026-09-08","sourceUpdated":"2026-09-08T15:10:20.633","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-23929","references":[{"url":"https://support.zabbix.com/browse/ZBX-28068","label":"security@zabbix.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23929.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-23929"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-23929"}],"tags":["nvd","csaf","vex","red-hat"],"epss":0.00258,"epssPercentile":0.17391,"ingestedAt":"2026-09-08T15:33:26.953Z","scores":{"nvd":5.4,"vendor":7.3},"slug":"CVE-2026-23929","body":"## Overview\n\nPrototype 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.\n\n## Affected\n\n- `zabbix >= 6.0.0, < 6.0.46`\n- `zabbix >= 7.0.0, < 7.0.25`\n- `zabbix >= 7.4.0, < 7.4.9`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `zabbix 7.4.9`\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23929.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}