{"id":"CVE-2026-23929","state":"PUBLISHED","title":"Prototype pollution leading to stored XSS","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.","publishedAt":"2026-08-18T12:16:15.322Z","updatedAt":"2026-08-19T03:55:58.598Z","severity":{"score":8.5,"label":"High","version":"4.0","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","source":"Zabbix"},"assigner":"Zabbix","products":["Zabbix Zabbix"],"affected":[{"vendor":"Zabbix","product":"Zabbix","defaultStatus":"unknown","versions":[{"version":"6.0.44","status":"affected","lessThanOrEqual":"6.0.45","changes":[{"at":"6.0.46","status":"unaffected"}],"versionType":"git"},{"version":"7.0.22","status":"affected","lessThanOrEqual":"7.0.24","changes":[{"at":"7.0.25","status":"unaffected"}],"versionType":"git"},{"version":"7.4.6","status":"affected","lessThanOrEqual":"7.4.8","changes":[{"at":"7.4.9","status":"unaffected"}],"versionType":"git"}],"repo":"https://git.zabbix.com/","modules":["Frontend"]}],"references":["https://support.zabbix.com/browse/ZBX-28068"],"weaknesses":["CWE-1321"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/23xxx/CVE-2026-23929.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23929","state":"PUBLISHED","datePublished":"2026-08-18T12:16:15.322Z","dateUpdated":"2026-08-19T03:55:58.598Z","assignerShortName":"Zabbix","assignerOrgId":"72de3e22-0555-4a0d-ae81-9249e0f0a1e8","dateReserved":"2026-01-19T14:03:13.686Z"},"containers":{"cna":{"title":"Prototype pollution leading to stored XSS","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Zabbix","product":"Zabbix","defaultStatus":"unknown","versions":[{"version":"6.0.44","status":"affected","lessThanOrEqual":"6.0.45","changes":[{"at":"6.0.46","status":"unaffected"}],"versionType":"git"},{"version":"7.0.22","status":"affected","lessThanOrEqual":"7.0.24","changes":[{"at":"7.0.25","status":"unaffected"}],"versionType":"git"},{"version":"7.4.6","status":"affected","lessThanOrEqual":"7.4.8","changes":[{"at":"7.4.9","status":"unaffected"}],"versionType":"git"}],"repo":"https://git.zabbix.com/","modules":["Frontend"]}],"references":[{"url":"https://support.zabbix.com/browse/ZBX-28068"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"ACTIVE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":8.5,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1321","lang":"en","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (\"Prototype Pollution\")","type":"CWE"}]}],"providerMetadata":{"shortName":"Zabbix","orgId":"72de3e22-0555-4a0d-ae81-9249e0f0a1e8","dateUpdated":"2026-08-18T12:16:15.322Z"},"impacts":[{"capecId":"CAPEC-173","descriptions":[{"lang":"en","value":"CAPEC-173: Pollution of Data Structure / Property Injection"}]}],"configurations":[{"lang":"en","value":"An authenticated Zabbix user could inject the malicious HTML into the Zabbix UI (Map page).","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>An authenticated Zabbix user could inject the malicious HTML into the Zabbix UI (Map page).</p>"}]}],"solutions":[{"lang":"en","value":"Update the affected components to their respective fixed versions.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Update the affected components to their respective fixed versions.</p>"}]}],"credits":[{"lang":"en","value":"Zabbix wants to thank Perce, 6o_o9 and Nassim BETTACH @Shenron for submitting this report on the HackerOne bug bounty platform.","type":"reporter"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-18T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-23929"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-19T03:55:58.598Z"}}]}}}