Fix AntPathMatcher URI template variable extractor

See gh-33085

spring-core/src/main/java/org/springframework/util/AntPathMatcher.java

@@ -462,7 +462,7 @@ public class AntPathMatcher implements PathMatcher {
 			matcher = this.stringMatcherCache.get(pattern);
 		}
 		if (matcher == null) {
-			matcher = new AntPathStringMatcher(pattern, this.caseSensitive);
+			matcher = new AntPathStringMatcher(pattern, this.pathSeparator, this.caseSensitive);
 			if (cachePatterns == null && this.stringMatcherCache.size() >= CACHE_TURNOFF_THRESHOLD) {
 				// Try to adapt to the runtime situation that we're encountering:
 				// There are obviously too many different patterns coming in here...
@@ -646,8 +646,6 @@ public class AntPathMatcher implements PathMatcher {
 	 */
 	protected static class AntPathStringMatcher {
 
-		private static final Pattern GLOB_PATTERN = Pattern.compile("\\?|\\*|\\{((?:\\{[^/]+?\\}|[^/{}]|\\\\[{}])+?)\\}");
-
 		private static final String DEFAULT_VARIABLE_PATTERN = "((?s).*)";
 
 		private final String rawPattern;
@@ -661,15 +659,11 @@ public class AntPathMatcher implements PathMatcher {
 
 		private final List<String> variableNames = new ArrayList<>();
 
-		public AntPathStringMatcher(String pattern) {
-			this(pattern, true);
-		}
-
-		public AntPathStringMatcher(String pattern, boolean caseSensitive) {
+		public AntPathStringMatcher(String pattern, String pathSeparator, boolean caseSensitive) {
 			this.rawPattern = pattern;
 			this.caseSensitive = caseSensitive;
 			StringBuilder patternBuilder = new StringBuilder();
-			Matcher matcher = GLOB_PATTERN.matcher(pattern);
+			Matcher matcher = getGlobPattern(pathSeparator).matcher(pattern);
 			int end = 0;
 			while (matcher.find()) {
 				patternBuilder.append(quote(pattern, end, matcher.start()));
@@ -710,6 +704,10 @@ public class AntPathMatcher implements PathMatcher {
 			}
 		}
 
+		private static Pattern getGlobPattern(String pathSeparator) {
+			return Pattern.compile(String.format("\\?|\\*|\\{((?:\\{[^%s]+?\\}|[^%s{}]|\\\\[{}])+?)\\}", pathSeparator, pathSeparator));
+		}
+
 		private String quote(String s, int start, int end) {
 			if (start == end) {
 				return "";

spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java

@@ -41,6 +41,7 @@ import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException
 class AntPathMatcherTests {
 
 	private final AntPathMatcher pathMatcher = new AntPathMatcher();
+	private final AntPathMatcher dotSeparatedPathMatcher = new AntPathMatcher(".");
 
 
 	@Test
@@ -357,6 +358,24 @@ class AntPathMatcherTests {
 		assertThat(result).isEqualTo(expected);
 	}
 
+	@Test // gh-26264
+	void extractUriTemplateVariablesFromDotSeparatedPath() {
+		Map<String, String> result = dotSeparatedPathMatcher.extractUriTemplateVariables("price.stock.{tickerSymbol}", "price.stock.aaa");
+		assertThat(result).isEqualTo(Collections.singletonMap("tickerSymbol", "aaa"));
+
+		result = dotSeparatedPathMatcher.extractUriTemplateVariables("price.stock.{ticker/symbol}", "price.stock.aaa");
+		assertThat(result).isEqualTo(Collections.singletonMap("ticker/symbol", "aaa"));
+
+		result = dotSeparatedPathMatcher.extractUriTemplateVariables("notification.**.{operation}", "notification.foo.update");
+		assertThat(result).isEqualTo(Collections.singletonMap("operation", "update"));
+
+		result = dotSeparatedPathMatcher.extractUriTemplateVariables("news.sports.feed/{type}", "news.sports.feed/xml");
+		assertThat(result).isEqualTo(Collections.singletonMap("type", "xml"));
+
+		result = dotSeparatedPathMatcher.extractUriTemplateVariables("news.sports.{operation}/*", "news.sports.feed/xml");
+		assertThat(result).isEqualTo(Collections.singletonMap("operation", "feed"));
+	}
+
 	@Test
 	void extractUriTemplateVariablesRegex() {
 		Map<String, String> result = pathMatcher