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Angle brackets should not appear in CSS contexts, as they may affect token boundaries (such as closing a <style> tag, resulting in injection). Instead emit filterFailsafe, matching the behavior for other dangerous characters. Thanks to Juho Nurminen of Mattermost for reporting this issue. For #59720 Fixes #59811 Fixes CVE-2023-24539 (From OE-Core rev: 0a09194f3d4ad98d0cf0d070ec0c99e7a6c8a158) Signed-off-by: Vivek Kumbhar <vkumbhar@mvista.com> Signed-off-by: Steve Sakoman <steve@sakoman.com>