CVE-2026-35540

{"id": "CVE-2026-35540", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.2}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2026-04-03T05:16:22.100", "references": [{"url": "https://github.com/roundcube/roundcubemail/commit/27ec6cc9cb25e1ef8b4d4ef39ce76d619caa6870", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://github.com/roundcube/roundcubemail/commit/579b68eff90650a5c782e153debd66c765648942", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.14", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5", "tags": ["Release Notes"], "source": "cve@mitre.org"}, {"url": "https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-669"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. Insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts."}], "lastModified": "2026-04-07T20:52:15.220", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AF4B6448-D4F5-4680-B32C-9366630E9485", "versionEndExcluding": "1.6.14", "versionStartIncluding": "1.6.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}