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CVE-2024-42010

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 66.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-05 · updated 2026-06-17
• Weakness: CWE-200

Description

mod_css_styles in Roundcube through 1.5.7 and 1.6.x through 1.6.7 insufficiently filters Cascading Style Sheets (CSS) token sequences in rendered e-mail messages, allowing a remote attacker to obtain sensitive information.

Affected products

• Roundcube: through 1.5.7; from 1.6x through 1.6.7

References

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

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