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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Webmail", "repo": "https://github.com/roundcube/roundcubemail/", "vendor": "Roundcube", "versions": [{"lessThan": "1.6.20", "status": "affected", "version": "1.6.0", "versionType": "semver"}, {"lessThan": "1.7.5", "status": "affected", "version": "1.7.0", "versionType": "semver"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vulnerability in the CSS proxy (the utils/modcss action). The fetched stylesheet was read into memory in full, with no size limit and no read timeout, so a stylesheet URL referencing an attacker-controlled host could be used to exhaust server memory. Upstream fixed this in the commit \u201cAdd a size limit to the CSS proxy content processing\u201d, which caps the response at 5 MB, reads it as a stream and applies a read timeout."}], "id": "CVE-2026-114731", "lastModified": "2026-10-22T03:16:38.363", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-10-22T03:16:38.363", "references": [{"source": "cve@mitre.org", "url": "https://bugs.debian.org/1151279"}, {"source": "cve@mitre.org", "url": "https://github.com/roundcube/roundcubemail/commit/2c9f6da692fa37cad2aaf85d5b127b583d22b264"}, {"source": "cve@mitre.org", "url": "https://github.com/roundcube/roundcubemail/commit/99a5bdd05b01f45493cc0da4c96968eac7668126"}, {"source": "cve@mitre.org", "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.6.20"}, {"source": "cve@mitre.org", "url": "https://github.com/roundcube/roundcubemail/releases/tag/1.7.5"}, {"source": "cve@mitre.org", "url": "https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-770"}], "source": "cve@mitre.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.6.0,1.6.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.7.0,1.7.5)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Webmail", "source": "cna", "vendor": "Roundcube"}, "product": "webmail", "vendor": "roundcube"}], "created": "2026-10-22T06:15:11.712276+00:00", "title": "Uncontrolled Resource Consumption in Roundcube Webmail CSS Proxy Leading to Server Memory Exhaustion", "updated": "2026-10-22T07:30:08.794322+00:00", "vendors": ["roundcube", "roundcube$PRODUCT$webmail"]}