Cross-site Scripting (XSS) Affecting evolution package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-RHEL7-EVOLUTION-19761663
  • published13 Sept 2026
  • disclosed10 Sept 2026

Introduced: 10 Sep 2026

CVE-2026-88859  (opens in a new tab)
CWE-84  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 evolution.

NVD Description

Note: Versions mentioned in the description apply only to the upstream evolution package and not the evolution package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoofed vCard control. When a victim clicks on this control, Evolution's trusted JavaScript handler incorrectly assigns an attacker-controlled JavaScript URL to an iframe's source. This action leads to arbitrary JavaScript execution within the mail-viewing context, effectively bypassing the security measures designed to prevent script execution in email content.

CVSS Base Scores

version 3.1