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Generated remediation guidance and an executive summary. No account required.
When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked.
Use CWE-146, Freedesktop vendor hub and Xdg-Utils product page to widen CVE-2022-4055 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2015-1877, CVE-2017-18266 and CVE-2009-0068 for nearby disclosures in the same product family.