CVE-2024-42009

roundcubemail: Fix XSS vulnerability in post-processing of sanitized HTML content [ ]

CVE-2024-42009 is fixed in 7 products on 1 platform, first by roundcube 1.6.6+dfsg-2ubuntu0.1+esm1, released August 5, 2024. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on June 9, 2025. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

9.3

critical

Exploitation

Exploited

Listed by CISA

CISA KEV

Jun 9, 2025

Federal due date Jun 30, 2025

EPSS

0.8288

99th percentile

Fix XSS vulnerability in post-processing of sanitized HTML content [ ]

Where it's fixed

Product	Fixed in	Fix	Released
Linux
roundcube · Debian 12.15 (bookworm)	1.6.5+dfsg-1+deb12u3	DEBIAN-CVE-2024-42009	Aug 5, 2024
roundcube · Debian 13.5 (trixie)	1.6.8+dfsg-1	DEBIAN-CVE-2024-42009	Aug 5, 2024
roundcube · Debian 14	1.6.8+dfsg-1	DEBIAN-CVE-2024-42009	Aug 5, 2024
roundcube · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcube-core · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube-core 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcube-mysql · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube-mysql 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcube-pgsql · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube-pgsql 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcube-plugins · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube-plugins 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcube-sqlite3 · Ubuntu 24.04.5 LTS (noble)	1.6.6+dfsg-2ubuntu0.1+esm1	roundcube-sqlite3 1.6.6+dfsg-2ubuntu0.1+esm1	Aug 5, 2024
roundcubemail · opensuse-leap 15.6	1.6.8-bp156.2.3.1	OPENSUSE-SU-2024:0328-1	Oct 9, 2024

Details

Published
August 5, 2024
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

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