CVE WatchSep 10, 2026

CVE-2026-88859

A flaw was found in Evolution. A remote attacker can exploit this vulnerability by sending a specially crafted HTML email containing a spoof

CVSS

6.3

Medium

EPSS

0.3%

p24

KEV

—

Exploit Today

0-100

Published: Sep 10, 2026 · Last modified: Sep 10, 2026 · CWE-84

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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