CVE Catalog

CVE-2026-88859

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.53%

45th percentile - higher than 45% of all known CVEs

Summary

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.

Risk Assessment

An attacker can execute arbitrary JavaScript in the victim's mail client context, potentially leading to data theft, session hijacking, or further attacks. The risk affects Evolution users opening malicious emails.

Recommendation

Update Evolution to the latest version containing the fix. Until then, avoid clicking suspicious vCard controls in emails and consider disabling JavaScript execution in the mail view.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS