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-rw-r--r--modules/markup/html.go6
-rw-r--r--modules/markup/html_test.go4
2 files changed, 7 insertions, 3 deletions
diff --git a/modules/markup/html.go b/modules/markup/html.go
index d45153d95b..e8391341d9 100644
--- a/modules/markup/html.go
+++ b/modules/markup/html.go
@@ -86,8 +86,8 @@ var globalVars = sync.OnceValue(func() *globalVarsType {
// codePreviewPattern matches "http://domain/.../{owner}/{repo}/src/commit/{commit}/{filepath}#L10-L20"
v.codePreviewPattern = regexp.MustCompile(`https?://\S+/([^\s/]+)/([^\s/]+)/src/commit/([0-9a-f]{7,64})(/\S+)#(L\d+(-L\d+)?)`)
- // cleans: "<foo/bar", "<any words/", ("<html", "<head", "<script", "<style")
- v.tagCleaner = regexp.MustCompile(`(?i)<(/?\w+/\w+|/[\w ]+/|/?(html|head|script|style\b))`)
+ // cleans: "<foo/bar", "<any words/", ("<html", "<head", "<script", "<style", "<?", "<%")
+ v.tagCleaner = regexp.MustCompile(`(?i)<(/?\w+/\w+|/[\w ]+/|/?(html|head|script|style|%|\?)\b)`)
v.nulCleaner = strings.NewReplacer("\000", "")
return v
})
@@ -253,7 +253,7 @@ func postProcess(ctx *RenderContext, procs []processor, input io.Reader, output
node, err := html.Parse(io.MultiReader(
// prepend "<html><body>"
strings.NewReader("<html><body>"),
- // Strip out nuls - they're always invalid
+ // strip out NULLs (they're always invalid), and escape known tags
bytes.NewReader(globalVars().tagCleaner.ReplaceAll([]byte(globalVars().nulCleaner.Replace(string(rawHTML))), []byte("&lt;$1"))),
// close the tags
strings.NewReader("</body></html>"),
diff --git a/modules/markup/html_test.go b/modules/markup/html_test.go
index 58f71bdd7b..5fdbf43f7c 100644
--- a/modules/markup/html_test.go
+++ b/modules/markup/html_test.go
@@ -525,6 +525,10 @@ func TestPostProcess(t *testing.T) {
test("<script>a</script>", `&lt;script&gt;a&lt;/script&gt;`)
test("<STYLE>a", `&lt;STYLE&gt;a`)
test("<style>a</STYLE>", `&lt;style&gt;a&lt;/STYLE&gt;`)
+
+ // other special tags, our special behavior
+ test("<?php\nfoo", "&lt;?php\nfoo")
+ test("<%asp\nfoo", "&lt;%asp\nfoo")
}
func TestIssue16020(t *testing.T) {