ClosedPatched

Roundcube Webmail: Webmail Cross-Site Scripting Vulnerability

Roundcube Webmail

RoundCube Webmail contains a cross-site scripting vulnerability. This vulnerability could allow a remote attacker to steal and send emails of a victim via a crafted e-mail message that abuses a Desanitization issue in message_body() in program/actions/mail/show.php. Added to CISA KEV on 2025-06-09.

Why this severity: CVSS 9.3 (CISA ADP, v3.1); actively exploited (CISA KEV)

Started: Jun 9, 2025
Closed: Jun 9, 2025
CVE: CVE-2024-42009

Follow this incident

Updated Jun 9, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Jun 9, 2025
CISA added CVE-2024-42009 to the KEV catalog (due 2025-06-30).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

Get an email when a new major security incident drops. No spam, unsubscribe any time.

Get notified