A vulnerability has been identified in the **GNOME Geary** package within its **`mailto` URI handling** component. This flaw occurs because the email client automatically processes a non-standard `attach` parameter in email links without prompting or alerting the user.
An attacker could exploit this by tricking a user into clicking a specially crafted link (for example, `mailto:[email protected]?attach=/path/to/sensitive_file`). When clicked, Geary will automatically open a new compose window with the specified local file already attached. Because there is no dialog box or visual warning indicating that the file was attached by the link rather than the user, the user might unknowingly send sensitive files or data to the attacker upon hitting send.

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Fixes

Solution

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Workaround

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History

Fri, 26 Jun 2026 05:30:00 +0000

Type Values Removed Values Added
First Time appeared Gnome
Gnome geary
Vendors & Products Gnome
Gnome geary

Fri, 26 Jun 2026 02:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-200

Fri, 26 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
Description A vulnerability has been identified in the **GNOME Geary** package within its **`mailto` URI handling** component. This flaw occurs because the email client automatically processes a non-standard `attach` parameter in email links without prompting or alerting the user. An attacker could exploit this by tricking a user into clicking a specially crafted link (for example, `mailto:[email protected]?attach=/path/to/sensitive_file`). When clicked, Geary will automatically open a new compose window with the specified local file already attached. Because there is no dialog box or visual warning indicating that the file was attached by the link rather than the user, the user might unknowingly send sensitive files or data to the attacker upon hitting send.
Title geary: geary: Silent file attachment via ?attach= parameter
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'}

threat_severity

Moderate


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cve-icon MITRE

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cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

Severity : Moderate

Publid Date: 2026-06-25T10:07:00Z

Links: CVE-2026-13324 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T05:15:16Z

Weaknesses