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CVE-2026-88859 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://access.redhat.com/security/cve/CVE-2026-88859	[email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2531401	[email protected]
https://gitlab.gnome.org/GNOME/evolution/-/work_items/3388	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-84	Improper Neutralization of Encoded URI Schemes in a Web Page	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 10, 2026	CVE Modified	[email protected]
Sep 10, 2026	New CVE Received	[email protected]
Sep 10, 2026	CVE Modified	CISA-ADP