MEDIUM CISA KEV

CVE-2023-5631

CVSS v3

5.4

MEDIUM

EPSS Score

85.2%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

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.

CISA Known Exploited Vulnerability

Date Added
10/26/2023
Patch Due Date
11/16/2023
Ransomware Use
Unknown

Technical details

Published
10/18/2023

Frequently asked questions

What is CVE-2023-5631?

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.

Is CVE-2023-5631 actively exploited?

Yes. CVE-2023-5631 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 11/16/2023.

What is the CVSS score for CVE-2023-5631?

CVE-2023-5631 has a CVSS v3 base score of 5.4 (MEDIUM severity).

Is CVE-2023-5631 affecting your environment?

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