diff --git a/.changeset/khaki-vans-learn.md b/.changeset/khaki-vans-learn.md
new file mode 100644
index 000000000000..8b45081605c5
--- /dev/null
+++ b/.changeset/khaki-vans-learn.md
@@ -0,0 +1,5 @@
+---
+"@biomejs/biome": patch
+---
+
+Fixed #8563: fixed a bounds check on bogus regex literals that caused panics when doing type inference
diff --git a/crates/biome_js_type_info/src/local_inference.rs b/crates/biome_js_type_info/src/local_inference.rs
index e26f103cdd42..1c5abe8e2875 100644
--- a/crates/biome_js_type_info/src/local_inference.rs
+++ b/crates/biome_js_type_info/src/local_inference.rs
@@ -2688,7 +2688,7 @@ fn split_regex_literal(token: SyntaxResult<JsSyntaxToken>) -> Option<RegexpLiter
     let literal = token.ok()?.token_text_trimmed();
     let open_index: usize = literal.find('/')? + 1;
     let close_index: usize = literal.rfind('/')?;
-    if open_index == close_index {
+    if open_index >= close_index {
         return None;
     }