httputil: Reject header lines beginning with invalid whitespace#3488
Merged
bdarnell merged 1 commit intotornadoweb:masterfrom Apr 25, 2025
Merged
httputil: Reject header lines beginning with invalid whitespace#3488bdarnell merged 1 commit intotornadoweb:masterfrom
bdarnell merged 1 commit intotornadoweb:masterfrom
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The obs-fold feature is defined only for tabs and spaces. The str.isspace() method also accepts other whitespace characters. These characters are not valid in HTTP headers and should be treated as errors instead of triggering line folding. Fixes tornadoweb#3480
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The obs-fold feature is defined only for tabs and spaces. The str.isspace() method also accepts other whitespace characters. These characters are not valid in HTTP headers and should be treated as errors instead of triggering line folding.
Fixes #3480