{"id":"CVE-2026-54433","published":"2026-07-14T16:18:16Z","modified":"2026-07-15T14:10:33Z","title":"In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted…","vendor":"Roundcube","product":"Webmail","tier":"tail","description":{"text":"In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).","provenance":"source","from":"CVE.org"},"cvss":{"score":7.2,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00311,"percentile":0.23954,"provenance":"source"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"references":[{"url":"https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2","tags":[]}],"priority":{"score":14.8,"factors":[{"name":"EPSS percentile","points":4.79},{"name":"Public exploit code","points":5.0},{"name":"CVSS severity","points":5.04}]},"exploitSources":{"pocGithub":{"count":1,"skipped":0,"earliest":"2026-08-14","earliestUrl":"https://github.com/aramosf/CVE-2026-54433","repos":[{"name":"aramosf/CVE-2026-54433","url":"https://github.com/aramosf/CVE-2026-54433","stars":0,"created":"2026-08-14"}]},"first":{"date":"2026-08-14","source":"PoC-in-GitHub","url":"https://github.com/aramosf/CVE-2026-54433"},"provenance":"source"},"vendorSlug":"roundcube","affectedVersions":[{"vendor":"Roundcube","product":"Webmail","versions":[">= 1.6.0, < 1.6.17",">= 1.7.0, < 1.7.2"]}],"euvd":{"id":"EUVD-2026-43732","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-roundcube-webmail-cwe-79"}}