Security Vulnerabilities fixed in Thunderbird 147.0.1 — Mozilla

When a user explicitly requested Thunderbird to decrypt an inline OpenPGP message that was embedded in a text section of an email that was formatted and styled with HTML and CSS, then the decrypted contents were rendered in a context in which the CSS styles from the outer messages were active. If...

PT-2026-5077

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 147.0.1 Thunderbird versions prior to 140.7.1 Description A flaw exists that could allow for CSS-based exfiltration of content from partially encrypted emails when remote content is permitted. This could potential...