CVE-2024-42009 on CISA KEV

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows 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.

01What CISA says about this vulnerability

A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows 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.

02Required action — verbatim from CISA

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

03Notes & references

• github.com — https://github.com/roundcube/roundcubemail/releases
• sonarsource.com — https://sonarsource.com/blog/government-emails-at-risk-critical-cross-site-scrip…
• github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.5.8
• github.com — https://github.com/roundcube/roundcubemail/releases/tag/1.6.8
• roundcube.net — https://roundcube.net/news/2024/08/04/security-updates-1.6.8-and-1.5.8

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

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