{"id":"CVE-2025-39663","state":"PUBLISHED","title":"Cross Site Scripting through compromised remote site","description":"Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to inject malicious HTML code into service outputs in the central site. Affecting Checkmk before 2.4.0p14, 2.3.0p39, 2.2.0 and 2.1.0 (eol).","publishedAt":"2025-10-30T10:43:08.500Z","updatedAt":"2025-11-07T16:04:27.994Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"Checkmk"},"assigner":"Checkmk","products":["Checkmk GmbH Checkmk"],"affected":[{"vendor":"Checkmk GmbH","product":"Checkmk","defaultStatus":"unaffected","versions":[{"version":"2.4.0","status":"affected","lessThan":"2.4.0p14","versionType":"semver"},{"version":"2.3.0","status":"affected","lessThan":"2.3.0p39","versionType":"semver"},{"version":"2.2.0","status":"affected","versionType":"semver"},{"version":"2.1.0","status":"affected","versionType":"semver"}]}],"references":["https://checkmk.com/werk/17998","https://github.com/sbaresearch/advisories/tree/82fd27e4570433464c30b35150b197db9a850f4e/2025/SBA-ADV-20250729-01_Checkmk_Cross_Site_Scripting","http://seclists.org/fulldisclosure/2025/Nov/0"],"weaknesses":["CWE-80"],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/39xxx/CVE-2025-39663.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-39663","state":"PUBLISHED","datePublished":"2025-10-30T10:43:08.500Z","dateUpdated":"2025-11-07T16:04:27.994Z","assignerShortName":"Checkmk","assignerOrgId":"f7d6281c-4801-44ce-ace2-493291dedb0f","dateReserved":"2025-04-16T07:07:38.256Z"},"containers":{"cna":{"title":"Cross Site Scripting through compromised remote site","descriptions":[{"lang":"en","value":"Cross-Site Scripting (XSS) vulnerability in Checkmk's distributed monitoring allows a compromised remote site to inject malicious HTML code into service outputs in the central site. Affecting Checkmk before 2.4.0p14, 2.3.0p39, 2.2.0 and 2.1.0 (eol)."}],"affected":[{"vendor":"Checkmk GmbH","product":"Checkmk","defaultStatus":"unaffected","versions":[{"version":"2.4.0","status":"affected","lessThan":"2.4.0p14","versionType":"semver"},{"version":"2.3.0","status":"affected","lessThan":"2.3.0p39","versionType":"semver"},{"version":"2.2.0","status":"affected","versionType":"semver"},{"version":"2.1.0","status":"affected","versionType":"semver"}]}],"references":[{"url":"https://checkmk.com/werk/17998"},{"url":"https://github.com/sbaresearch/advisories/tree/82fd27e4570433464c30b35150b197db9a850f4e/2025/SBA-ADV-20250729-01_Checkmk_Cross_Site_Scripting"}],"metrics":[{"cvssV4_0":{"baseScore":8.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-80","description":"CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Checkmk","orgId":"f7d6281c-4801-44ce-ace2-493291dedb0f","dateUpdated":"2025-10-30T10:44:22.121Z"},"impacts":[{"capecId":"CAPEC-592","descriptions":[{"lang":"en","value":"CAPEC-592: Stored XSS"}]}],"credits":[{"lang":"en","type":"reporter","value":"Lisa Gnedt (SBA Research)"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/sbaresearch/advisories/tree/82fd27e4570433464c30b35150b197db9a850f4e/2025/SBA-ADV-20250729-01_Checkmk_Cross_Site_Scripting","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-10-30T13:25:54.862081Z","id":"CVE-2025-39663","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-10-30T13:25:58.384Z"}},{"title":"CVE Program Container","references":[{"url":"http://seclists.org/fulldisclosure/2025/Nov/0"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2025-11-07T16:04:27.994Z"}}]}}}