Cloudanix VulnDB

CVE-2026-114731

Medium · 5.3

CVSS

5.3

EPSS

0.4%

Published

Oct 22, 2026

CISA due date

—

The record

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an uncontrolled resource consumption vulnerability in the CSS proxy (the utils/modcss action). The fetched stylesheet was read into memory in full, with no size limit and no read timeout, so a stylesheet URL referencing an attacker-controlled host could be used to exhaust server memory. Upstream fixed this in the commit “Add a size limit to the CSS proxy content processing”, which caps the response at 5 MB, reads it as a stream and applies a read timeout.

Affected packages

Ecosystem Package Introduced Fixed

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