CSS Injection via SVG Animate Element in Roundcube Webmail

Publication date: 2026-05-25

Last updated on: 2026-05-25

Assigner: MITRE

Description

Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7 has insufficient HTML sanitization that could lead to Cascading Style Sheets (CSS) injection via an SVG document that has an animate element with the attributeName attribute.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-05-25

Last Modified

2026-05-25

Generated

2026-07-06

AI Q&A

2026-05-26

EPSS Evaluated

2026-07-04

NVD

CVE-2026-48848

EUVD

EUVD-2026-31727

Affected Vendors & Products

Vendor	Product	Version / Range
roundcube	roundcube	to 1.6.16 (exc)
roundcube	roundcube	to 1.7 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability exists in Roundcube Webmail versions 1.6.x before 1.6.16 and 1.7.x before 1.7. It is caused by insufficient HTML sanitization, which allows an attacker to inject Cascading Style Sheets (CSS) through an SVG document containing an animate element with the attributeName attribute.

Impact Analysis

The vulnerability can lead to CSS injection, which may allow an attacker to manipulate the appearance or behavior of the webmail interface. According to the CVSS score of 7.2, it has a high severity with potential impacts on confidentiality and integrity, but not availability.

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