CVE-2023-5631

CISA KEV
ACT NOW Priority: 0.00 BB Relevance: 10/100
Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.

CISA Known Exploited Vulnerability

Vendor / Product Roundcube — Webmail
Date Added 2023-10-26
Remediation Due 2023-11-16
https://roundcube.net/news/2023/10/16/security-update-1.6.4-released, https://roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15 ; https://nvd.nist.gov/vuln/detail/CVE-2023-5631

Bug Bounty Relevance

10 / 100
✓ Known exploited (KEV)
✓ High exploitation probability

CVSS Score

Unscored

EPSS — Exploitation Probability

76.34%
Raw Score 0.763370
Percentile 99.5%
Date 2026-10-28

Intelligence Sources

kev ref →