{"id":"CVE-2026-74997","state":"PUBLISHED","title":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement val","description":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmd_learn driver.","publishedAt":"2026-08-17T12:37:45.126Z","updatedAt":"2026-08-17T14:34:26.557Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"mitre"},"assigner":"mitre","products":["Roundcube Webmail"],"affected":[{"vendor":"Roundcube","product":"Webmail","defaultStatus":"unaffected","versions":[{"version":"1.6.0","status":"affected","lessThan":"1.6.18","versionType":"semver"},{"version":"1.7.0","status":"affected","lessThan":"1.7.3","versionType":"semver"}]}],"references":["https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3","https://github.com/roundcube/roundcubemail/releases/tag/1.6.18","https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cd","https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2a","https://github.com/roundcube/roundcubemail/releases/tag/1.7.3","https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c"],"weaknesses":["CWE-78"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74997.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74997","state":"PUBLISHED","datePublished":"2026-08-17T12:37:45.126Z","dateUpdated":"2026-08-17T14:34:26.557Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2026-08-17T12:37:44.639Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmd_learn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmd_learn driver."}],"affected":[{"vendor":"Roundcube","product":"Webmail","defaultStatus":"unaffected","versions":[{"version":"1.6.0","status":"affected","lessThan":"1.6.18","versionType":"semver"},{"version":"1.7.0","status":"affected","lessThan":"1.7.3","versionType":"semver"}]}],"references":[{"url":"https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.18"},{"url":"https://github.com/roundcube/roundcubemail/commit/b8f90e28a46d42e79a69568cba897f8f4223d9cd"},{"url":"https://github.com/roundcube/roundcubemail/commit/495d211638f222336b20f4744545c53712426c2a"},{"url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.3"},{"url":"https://github.com/roundcube/roundcubemail/commit/14044f843cfacbe78b042f659e379d6b4497aa7c"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"mitre","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateUpdated":"2026-08-17T12:37:45.126Z"},"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":"1.6.0","versionEndExcluding":"1.6.18"},{"vulnerable":true,"criteria":"cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:*","versionStartIncluding":"1.7.0","versionEndExcluding":"1.7.3"}]}]}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-17T14:34:16.294775Z","id":"CVE-2026-74997","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-17T14:34:26.557Z"}}]}}}