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roundcubemail

Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker

to load arbitrary JavaScript code.

CVE-2023-5631 is a stored cross-site scripting vulnerability identified in the Roundcube Webmail client, affecting versions before 1.4.15, 1.5.5, and 1.6.4. The root cause lies in the improper neutralization of input during web page generation, specifically in the handling of HTML emails containing crafted SVG documents. The vulnerable component is program/lib/Roundcube/rcube_washtml.php, which fails to adequately sanitize SVG content embedded within emails. This flaw allows an attacker to embed malicious JavaScript code inside an email message that, when opened by a user in the vulnerable Roundcube client, executes in the context of the victim's browser session. The attack vector is remote and does not require prior authentication, but it does require the user to open or preview the crafted email, thus involving user interaction. The vulnerability impacts confidentiality and integrity by enabling session hijacking, cookie theft, or unauthorized actions performed with the victim's privileges. The CVSS 3.1 score is 6.1, reflecting medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and a scope change due to the potential to affect other components or data. No known exploits are currently reported in the wild, but the presence of this vulnerability in widely deployed open-source webmail software poses a significant risk if left unpatched. The vulnerability underscores the importance of robust input validation and output encoding in web applications handling complex content types like SVG within emails.

Detailed information about CVE-2023-5631: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Roundcube Roundcubemail

CVE-2023-5631: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Roundcube Roundcubemail - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-5631: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Roundcube Roundcubemail

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