What is CVE-2026-48843?

CVE-2026-48843 is a high-severity vulnerability in Roundcube Webmail, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2026-05-25.

How severe is CVE-2026-48843?

High severity. CVSS v3 base score is 7.2 out of 10.

SSRF in Roundcube Webmail

CVE-2026-48843

Roundcube Webmail 1.6.x between 1.6.14 and 1.6.16,and 1.7.x before 1.7.1 has 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 loca…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (12.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Roundcube Webmail — versions 1.6.0, 1.6.14, 1.7.0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2026-48843?: CVE-2026-48843 is a high-severity vulnerability in Roundcube Webmail, classified under Server-Side Request Forgery (SSRF). CVSS score: 7.2/10. Published 2026-05-25.
How severe is CVE-2026-48843?: High severity. CVSS v3 base score is 7.2 out of 10.