CVE-2023-43770: Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

CVE-2023-43770 · Severity: critical · CVSS 6.1 · Exploited in the wild · Published 2024-02-12

Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability in program/lib/Roundcube/rcube_string_replacer.php. The flaw allows attackers to execute malicious scripts via crafted links in plain/text email messages, potentially leading to information disclosure.

Technologies: Roundcube Webmail. Vendors: Roundcube.

Quick answers

Is CVE-2023-43770 exploited in the wild?
Yes. CVE-2023-43770 is known to be exploited in the wild, first recorded on 12 February 2024. Treat it as urgent.
How severe is CVE-2023-43770?
Critical severity, with a CVSS score of 6.1, published 12 February 2024.
Which products and versions are affected?
Roundcube Webmail < 1.4.14, 1.5.x < 1.5.4, 1.6.x < 1.6.3.
Is there a fix for CVE-2023-43770?
A patch was published on 2023-09-15: Vendor released security update 1.6.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-43770 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2023-43770?
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 Webmail < 1.4.14, 1.5.x < 1.5.4, 1.6.x < 1.6.3

Timeline

  • 2023-09-15: patched: Vendor released security update 1.6.3
  • 2023-09-22: disclosed: NVD Published Date
  • 2024-02-12: kev added: CISA added to Known Exploited Vulnerabilities Catalog

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