{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9818", "assignerOrgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "state": "REJECTED", "assignerShortName": "OCD", "dateReserved": "2026-05-28T10:37:45.625Z", "datePublished": "2026-05-28T12:16:05.464Z", "dateUpdated": "2026-05-28T16:35:38.661Z", "dateRejected": "2026-05-28T16:35:38.661Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "shortName": "OCD", "dateUpdated": "2026-05-28T16:35:38.661Z"}, "rejectedReasons": [{"lang": "en", "value": "This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."}]}], "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-9818", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-28T13:24:10.638627Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-28T13:24:14.064Z"}}], "cna": {"title": "Roundcube Local/Private URL Fetch Bypass", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Guillaume Meunier from Orange Cyberdefense CERT VOC Team"}], "impacts": [{"capecId": "CAPEC-554", "descriptions": [{"lang": "en", "value": "CAPEC-554 Functionality Bypass"}]}, {"capecId": "CAPEC-664", "descriptions": [{"lang": "en", "value": "CAPEC-664 Server Side Request Forgery"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/roundcube/roundcubemail/", "vendor": "Roundcube", "product": "Webmail", "versions": [{"status": "affected", "changes": [{"at": "1.6.16", "status": "unaffected"}], "version": "0", "lessThan": "1.6.16", "versionType": "git"}, {"status": "affected", "changes": [{"at": "1.7.1", "status": "unaffected"}], "version": "1.7.0", "lessThan": "1.7.1", "versionType": "git"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Upgrade to Roundcube Webmail 1.6.16 or 1.7.1", "supportingMedia": [{"type": "text/html", "value": "Upgrade to Roundcube Webmail 1.6.16 or 1.7.1", "base64": false}]}], "datePublic": "2026-05-28T10:58:00.000Z", "references": [{"url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.1", "tags": ["patch"]}, {"url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.16", "tags": ["patch"]}, {"url": "https://github.com/roundcube/roundcubemail/commit/faf867432f51ebbe100382a70a9e3c042415ee1b", "tags": ["patch"]}, {"url": "https://github.com/roundcube/roundcubemail/commit/7b52353653a67e6073b97d70eb94047132b78556", "tags": ["patch"]}, {"url": "https://advisories.orangecyberdefense.com/advisories/163", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "Roundcube's HTML sanitization path for message rendering allows loopback, localhost, RFC1918, link-local, and ULA URLs even when remote content loading is disabled. A remote attacker can send an HTML email that causes the victim's browser to issue requests to local or private-network services simply by opening the message preview.", "supportingMedia": [{"type": "text/html", "value": "Roundcube's HTML sanitization path for message rendering allows loopback, localhost, RFC1918, link-local, and ULA URLs even when remote content loading is disabled. A remote attacker can send an HTML email that causes the victim's browser to issue requests to local or private-network services simply by opening the message preview.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-184", "description": "CWE-184 Incomplete list of disallowed inputs"}]}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.6.16", "versionStartIncluding": "0"}, {"criteria": "cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "1.7.1", "versionStartIncluding": "1.7.0"}], "operator": "OR"}], "operator": "OR"}], "providerMetadata": {"orgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "shortName": "OCD", "dateUpdated": "2026-05-28T12:16:05.464Z"}}}, "cveMetadata": {"cveId": "CVE-2026-9818", "state": "PUBLISHED", "dateUpdated": "2026-05-28T13:24:17.678Z", "dateReserved": "2026-05-28T10:37:45.625Z", "assignerOrgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "datePublished": "2026-05-28T12:16:05.464Z", "assignerShortName": "OCD"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority."}], "id": "CVE-2026-9818", "lastModified": "2026-05-28T17:16:36.090", "metrics": {}, "published": "2026-05-28T13:16:25.440", "references": [], "sourceIdentifier": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "vulnStatus": "Rejected"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.6.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.7.0,1.7.1)"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Webmail", "source": "cna", "vendor": "Roundcube"}, "product": "webmail", "vendor": "roundcube"}], "created": "2026-05-28T13:15:22.413404+00:00", "updated": "2026-05-28T16:30:15.075755+00:00", "vendors": ["roundcube", "roundcube$PRODUCT$webmail"]}