CVE-2026-114729

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{"bugzilla": {"description": "roundcubemail: roundcubemail: Information disclosure via SVG SMIL remote content blocking bypass", "id": "2558747", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2558747"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-184", "details": ["Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass. rcube_washtml inspected the SVG SMIL animation attributes `to`, `from` and values for URIs, but not `by`; so markup such as in an HTML message caused remote content to be loaded without the user's consent, disclosing the client IP address and confirming that the message was opened. Upstream fixed this in the commit \u201cFix remote-content blocker bypass via SVG SMIL `by` attribute\u201d.", "A flaw was found in Roundcube Webmail. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing Scalable Vector Graphics (SVG) animations with an unvalidated animation attribute. The application's HTML sanitizer fails to inspect this attribute for remote links, causing external resources to load automatically without recipient consent. This bypasses the remote content protection mechanism and results in information disclosure, revealing the user's IP (Internet Protocol) address and confirming that the message was opened."], "mitigation": {"lang": "en:us", "value": "Update to roundcubemail 1.6.20 (1.6 LTS) or 1.7.5 per the upstream security updates of 2026-10-19. Disabling remote-content display reduces exposure, though the default remote-content blocker is the affected protection."}, "name": "CVE-2026-114729", "public_date": "2026-10-22T02:05:39Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-114729\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-114729\nhttps://bugs.debian.org/1151279\nhttps://github.com/roundcube/roundcubemail/commit/2b6ff79d8b14f94b0ff04765b7f02dbfdfe98efa\nhttps://github.com/roundcube/roundcubemail/commit/96d993b4ac57166a094b5774f4761e0b905d9a05\nhttps://github.com/roundcube/roundcubemail/releases/tag/1.6.20\nhttps://github.com/roundcube/roundcubemail/releases/tag/1.7.5\nhttps://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5"], "statement": "A flaw was found in Roundcube Webmail's HTML sanitizer (rcube_washtml). SVG SMIL animation attributes were inspected for remote URIs (`to`, `from`, and `values` in 1.6/1.7) but not `by`, so a crafted HTML email could load remote content without the recipient's consent, bypassing the remote-content blocker and disclosing the client IP address and confirming the message was opened. Upstream fixed in 1.6.20 and 1.7.5.", "threat_severity": "Moderate"}

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