{"id":"CVE-2026-126813","summary":"Roundcube Webmail before 1.6.21 and 1.7.6 IMAP Command Injection via _uid","details":"Roundcube Webmail before 1.6.21 and 1.7.x before 1.7.6 contains an IMAP command injection vulnerability that allows attackers to inject commands via CRLF in the _uid parameter when messages_cache is enabled. Attackers can lure logged-in victims into opening crafted GET links to mail/show or mail/get, executing IMAP commands that delete messages, change flags, or grant mailbox access via SETACL.","modified":"2026-11-13T02:47:25.688776166Z","published":"2026-11-11T20:53:13.638Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-93"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126813.json","unresolved_ranges":[{"extracted_events":[{"strategy":"StandardRange","range":[{"fixed":"1.6.21"},{"introduced":"1.7.0"},{"fixed":"1.7.6"}],"source":"AFFECTED_FIELD"}]},{"extracted_events":[{"range":[{"fixed":"1.6.21"},{"introduced":"1.7.0"},{"fixed":"1.7.6"}],"source":"CPE_FIELD","strategy":"CPEApplicability"}]},{"extracted_events":[{"range":[{"fixed":"1.6.21"},{"introduced":"1.7.x"},{"fixed":"1.7.6"}],"source":"DESCRIPTION"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/126xxx/CVE-2026-126813.json"},{"type":"ADVISORY","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.6.21"},{"type":"ADVISORY","url":"https://github.com/roundcube/roundcubemail/releases/tag/1.7.6"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126813"},{"type":"ADVISORY","url":"https://roundcube.net/news/2026/11/09/security-updates-1.6.21-and-1.7.6"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/roundcube-webmail-before-1.6.21-and-1.7.6-imap-command-injection-via-uid"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/2ea63692178cab5cea486c7c630901b7f6852c80"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/4cb1cf106b9ca5d465ed4924f2fab5d5108edfeb"},{"type":"FIX","url":"https://github.com/roundcube/roundcubemail/commit/d1dda13597ceed9df49d434a8d88b758bcf6ef5c"},{"type":"ARTICLE","url":"https://github.com/roundcube/roundcubemail/blob/1.7.5/program/lib/Roundcube/rcube_imap_generic.php#L2892"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/roundcube/roundcubemail","events":[{"introduced":"0"},{"fixed":"4cb1cf106b9ca5d465ed4924f2fab5d5108edfeb"},{"fixed":"d1dda13597ceed9df49d434a8d88b758bcf6ef5c"},{"fixed":"2ea63692178cab5cea486c7c630901b7f6852c80"},{"fixed":"e3ee91be63339736c38d36e0e23254a7e09570a4"},{"fixed":"1a6635100bb18c7184441f9230a8379e6e7b3e39"}],"database_specific":{"extracted_events":[{"source":"REFERENCES_COMMIT","range":[{"fixed":"4cb1cf106b9ca5d465ed4924f2fab5d5108edfeb"}]},{"source":"REFERENCES_COMMIT","range":[{"fixed":"d1dda13597ceed9df49d434a8d88b758bcf6ef5c"}]},{"range":[{"fixed":"2ea63692178cab5cea486c7c630901b7f6852c80"}],"source":"REFERENCES_COMMIT"},{"original_tag":"1.6.21","range":[{"fixed":"e3ee91be63339736c38d36e0e23254a7e09570a4"}],"source":"REFERENCES_TAG"},{"source":"REFERENCES_TAG","original_tag":"1.7.6","range":[{"fixed":"1a6635100bb18c7184441f9230a8379e6e7b3e39"}]}]}}],"versions":["1.6.20","1.7.5","1.7.4","1.6.19","1.7.3","1.6.18","1.6.17","1.7.2","1.6.16","1.7.1","1.7.0","1.7-rc6","1.6.15","1.7-rc5","1.6.14","1.7-rc4","1.6.13","1.7-rc3","1.7-rc2","1.6.12","1.7-rc","1.7-beta2","1.7-beta","1.6.11","1.6.10","1.6.9","1.6.8","1.6.7","1.6.6","1.6.5","1.6.4","1.6.3","1.6.2","1.6.1","1.6.0","1.6-rc","1.6-beta","1.5-rc","1.5-beta","1.4-rc2","1.4-rc1","1.4-beta","1.3-beta","1.2-rc","1.2-beta","1.1.0","1.1-rc","1.1-beta","v0.1-beta2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-126813.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}