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.
Published: 2026-09-10
Score: 6.3 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

To mitigate this issue, users can disable JavaScript execution for HTML mail in Evolution. This can be done through the Evolution preferences or by using `gsettings`. Disabling JavaScript may affect the rendering and functionality of some legitimate HTML emails. To disable JavaScript via `gsettings`, execute the following command: `gsettings set org.gnome.evolution.mail enable-javascript false` To revert this change, execute: `gsettings set org.gnome.evolution.mail enable-javascript true` Note that changes to `gsettings` take effect immediately, but Evolution may need to be restarted for the setting to be fully applied to already open mail views.

Tracking

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Advisories

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History

Thu, 10 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L'}


Thu, 10 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 10 Sep 2026 11:30:00 +0000

Type Values Removed Values Added
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.
Title Evolution: evolution: javascript execution via spoofed vcard control bypasses mail script-markup restriction
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-84
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}


Subscriptions

Redhat Enterprise Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-10T15:04:34.399Z

Reserved: 2026-09-10T10:42:51.932Z

Link: CVE-2026-88859

cve-icon Vulnrichment

Updated: 2026-09-10T11:37:12.696Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-10T12:16:33.980

Modified: 2026-09-10T16:18:10.867

Link: CVE-2026-88859

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T12:30:07Z

Weaknesses
  • CWE-84

    Improper Neutralization of Encoded URI Schemes in a Web Page