another clusterfuzz spotted issue (go-gitea#15032)

Signed-off-by: Andrew Thornton <art27@cantab.net>
6543-forks · Mar 18, 2021 · 4a24e85 · 4a24e85
1 parent 8c461eb
commit 4a24e85
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/modules/markup/html.go b/modules/markup/html.go
@@ -298,7 +298,7 @@ func RenderEmoji(
 	return ctx.postProcess(rawHTML)
 }
 
-var tagCleaner = regexp.MustCompile(`<((?:/?\w+/\w+)|(?:/[\w ]+/)|(/?[hH][tT][mM][lL][ />]))`)
+var tagCleaner = regexp.MustCompile(`<((?:/?\w+/\w+)|(?:/[\w ]+/)|(/?[hH][tT][mM][lL][ />])|(/?[hH][eE][aA][dD][ />]))`)
 var nulCleaner = strings.NewReplacer("\000", "")
 
 func (ctx *postProcessCtx) postProcess(rawHTML []byte) ([]byte, error) {