CVE-2026-114724

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{"bugzilla": {"description": "roundcubemail: roundcubemail: Arbitrary code execution via session object injection", "id": "2558730", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2558730"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-502", "details": ["Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcube_session::unserialize(). A session key prefixed with \u201c!\u201d was treated as having no value, and the reconstructed serialized string was emitted with a key but no corresponding value, desynchronizing the remainder of the input so that following session data was interpreted as a serialized value. This yields a PHP object injection primitive for an attacker able to influence stored session data. Upstream fixed this in the commit \u201cFix object injection primitive in rcube_session::unserialize() via \u201c!\u201d-prefixed session keys\u201d, which rejects such keys.", "A flaw was found in Roundcube Webmail. This flaw allows an attacker capable of modifying stored session data to achieve arbitrary code execution through object injection. The vulnerability occurs because session keys prefixed with an exclamation mark are mishandled during session deserialization, desynchronizing the parsed data and allowing subsequent session content to be executed as serialized objects."], "name": "CVE-2026-114724", "public_date": "2026-10-22T01:48:23Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-114724\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-114724\nhttps://bugs.debian.org/1151279\nhttps://github.com/roundcube/roundcubemail/commit/833770d3d3c35cfde74cc2614d368f25a75b6f99\nhttps://github.com/roundcube/roundcubemail/commit/93284f3f0e13f99af37fc3b81861e142eea8a922\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": "Red Hat has rated this vulnerability as Important because an attacker who successfully injects crafted data into session storage could execute arbitrary code on the host, while the prerequisite of preexisting access to alter backend session records prevents direct, unauthenticated remote exploitation. Roundcube is not shipped in Red Hat Enterprise Linux and is only distributed through community channels such as EPEL. As a result, supported Red Hat enterprise environments are not exposed to this flaw under default installations.", "threat_severity": "Important"}

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