Github user sdutry commented on a diff in the pull request: https://github.com/apache/struts/pull/151#discussion_r129282110 --- Diff: core/src/main/java/org/apache/struts2/dispatcher/Dispatcher.java --- @@ -88,7 +88,7 @@ */ public static final String REQUEST_POST_METHOD = "POST"; - public static final String MULTIPART_FORM_DATA_REGEX = "^multipart\\/form-data(; boundary=[\\-a-zA-Z0-9]{1,70})?"; + public static final String MULTIPART_FORM_DATA_REGEX = "^multipart/form-data(; boundary=[0-9a-zA-Z'()+_,\\-./:=?]{1,70})?"; --- End diff -- you are correct about the `-` needing to be escaped , but that's the only one i escaped. (they're in the order they're mentioned in RFC1341 (so i moved the `-` backwards in the pattern)
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