CVE-2026-62643
HIGHCVSS v3
7.2
HIGH
EPSS Score
—
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 7/14/2026
- Last Modified
- 7/14/2026
Frequently Asked Questions
What is CVE-2026-62643?
In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, insufficient Cascading Style Sheets (CSS) sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. NOTE: this issue exists because of insufficient fixes for CVE-2026-35540 and CVE-2026-48843.
Is CVE-2026-62643 actively exploited?
Active exploitation of CVE-2026-62643 has not been confirmed. The EPSS score is N/A%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2026-62643?
CVE-2026-62643 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string 3.1.
Is CVE-2026-62643 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.