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-rw-r--r--lib/banzai/filter/sanitization_filter.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/banzai/filter/sanitization_filter.rb b/lib/banzai/filter/sanitization_filter.rb
index afc2ca4e362..4110163d3bd 100644
--- a/lib/banzai/filter/sanitization_filter.rb
+++ b/lib/banzai/filter/sanitization_filter.rb
@@ -8,7 +8,7 @@ module Banzai
TABLE_ALIGNMENT_PATTERN = /text-align: (?<alignment>center|left|right)/
def whitelist
- whitelist = super
+ whitelist = super.dup
customize_whitelist(whitelist)