{"id":"CVE-2026-114730","state":"PUBLISHED","title":"Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() ","description":"Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() omitted the RFC 6052 NAT64 prefix 64:ff9b::/96, the RFC 8215 local-use NAT64 prefix 64:ff9b:1::/48 and the unspecified address ::/128, so URLs such as http://[64:ff9b::7f00:1]/ passed the filter and reached loopback, link-local and cloud metadata addresses. Upstream fixed this in the commit “Fix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96”.","publishedAt":"2026-10-22T02:09:40.059Z","updatedAt":"2026-10-28T02:18:48.643Z","severity":{"score":7.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","source":"mitre"},"assigner":"mitre","products":["Roundcube Webmail"],"affected":[{"vendor":"Roundcube","product":"Webmail","defaultStatus":"unaffected","versions":[{"version":"1.6.14","status":"affected","lessThan":"1.6.20","versionType":"semver"},{"version":"1.7.0","status":"affected","lessThan":"1.7.5","versionType":"semver"}],"repo":"https://github.com/roundcube/roundcubemail/"}],"references":["https://bugs.debian.org/1151279","https://github.com/roundcube/roundcubemail/commit/6e1d480e730a45f29829b6a11af608d5d6eb3db6","https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5","https://github.com/roundcube/roundcubemail/releases/tag/1.7.5","https://github.com/roundcube/roundcubemail/releases/tag/1.6.20","https://github.com/roundcube/roundcubemail/commit/3c3a65f66b53b7aaf3d720acd06e0b102eceb090"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:10:43.281Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/114xxx/CVE-2026-114730.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-114730","state":"PUBLISHED","datePublished":"2026-10-22T02:09:40.059Z","dateUpdated":"2026-10-28T02:18:48.643Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-10-22T02:09:39.582Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Roundcube Webmail 1.6.14 before 1.6.20 and 1.7.0 before 1.7.5 is affected by a server-side request forgery filter bypass. The network blocklist used by rcube_utils::is_local_url() omitted the RFC 6052 NAT64 prefix 64:ff9b::/96, the RFC 8215 local-use NAT64 prefix 64:ff9b:1::/48 and the unspecified address ::/128, so URLs such as http://[64:ff9b::7f00:1]/ passed the filter and reached loopback, link-local and cloud metadata addresses. Upstream fixed this in the commit “Fix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96”."}],"affected":[{"vendor":"Roundcube","product":"Webmail","defaultStatus":"unaffected","versions":[{"version":"1.6.14","status":"affected","lessThan":"1.6.20","versionType":"semver"},{"version":"1.7.0","status":"affected","lessThan":"1.7.5","versionType":"semver"}],"repo":"https://github.com/roundcube/roundcubemail/"}],"references":[{"url":"https://bugs.debian.org/1151279","tags":["issue-tracking","third-party-advisory"]},{"url":"https://github.com/roundcube/roundcubemail/commit/6e1d480e730a45f29829b6a11af608d5d6eb3db6","tags":["patch"]},{"url":"https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5","tags":["vendor-advisory","release-notes"]},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.5","tags":["release-notes","patch"]},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.20","tags":["release-notes","patch"]},{"url":"https://github.com/roundcube/roundcubemail/commit/3c3a65f66b53b7aaf3d720acd06e0b102eceb090","tags":["patch"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.2,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"CWE-918 Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-10-22T02:09:40.059Z"},"x_generator":{"engine":"CVE-Request-form 0.0.1"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*","versionStartIncluding":"1.6.14","versionEndExcluding":"1.6.20"},{"vulnerable":true,"criteria":"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*","versionStartIncluding":"1.7.0","versionEndExcluding":"1.7.5"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-28T02:18:39.748510Z","id":"CVE-2026-114730","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-28T02:18:48.643Z"}}]}}}