CVE-2023-5631: Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

CVE-2023-5631 · Severity: critical · CVSS 5.4 · Exploited in the wild · Published 2023-10-26

Roundcube Webmail contains a stored cross-site scripting (XSS) vulnerability in the rcube_washtml.php component. A remote attacker can execute arbitrary JavaScript code by sending a specially crafted HTML email message containing a malicious SVG document.

Technologies: Roundcube Webmail. Vendors: Roundcube.

Quick answers

Is CVE-2023-5631 exploited in the wild?
Yes. CVE-2023-5631 is known to be exploited in the wild, first recorded on 26 October 2023. Treat it as urgent.
How severe is CVE-2023-5631?
Critical severity, with a CVSS score of 5.4, published 26 October 2023.
Which products and versions are affected?
Roundcube Roundcube Webmail before 1.4.15, 1.5.x before 1.5.5, 1.6.x before 1.6.4.
Is there a fix for CVE-2023-5631?
A patch was published on 2023-10-16: Vendor released versions 1.6.4, 1.5.5, and 1.4.15 to address the vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-5631 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2023-5631?
Check whether you run Roundcube Webmail. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Roundcube Roundcube Webmail before 1.4.15, 1.5.x before 1.5.5, 1.6.x before 1.6.4

Timeline

  • 2023-10-16: patched: Vendor released versions 1.6.4, 1.5.5, and 1.4.15 to address the vulnerability.
  • 2023-10-26: disclosed: CVE published and added to CISA KEV catalog.
  • 2023-10-26: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
  • 2023-10-26: exploited: Reported as exploited in the wild.

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