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Mozilla Foundation Security Advisory 2006-21
Announced: April 21, 2006
Reporter: Georgi Guninski
Products: Firefox, Mozilla Suite
Fixed in: Thunderbird 184.108.40.206
Mozilla Suite 1.7.13
Switch to "plain text" mail composition, this vulnerability only affects HTML mail composition (the default). On the "Composition and Addressing" tab of Thunderbird's Account Settings dialog uncheck the "Compose messages in HTML format" option to compose messages in plain text.