diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 922014133293e..42a3a8a2c660c 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -1466,7 +1466,7 @@ public function isMethodCacheable(): bool
     public function getProtocolVersion(): ?string
     {
         if ($this->isFromTrustedProxy()) {
-            preg_match('~^(HTTP/)?([1-9]\.[0-9]) ~', $this->headers->get('Via') ?? '', $matches);
+            preg_match('~^(HTTP/)?([1-9]\.[0-9])\b~', $this->headers->get('Via') ?? '', $matches);
 
             if ($matches) {
                 return 'HTTP/'.$matches[2];
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index f1aa0ebeab928..a2eace70e6e80 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -2402,6 +2402,8 @@ public static function protocolVersionProvider()
             'trusted with via and protocol name' => ['HTTP/2.0', true, 'HTTP/1.0 fred, HTTP/1.1 nowhere.com (Apache/1.1)', 'HTTP/1.0'],
             'trusted with broken via' => ['HTTP/2.0', true, 'HTTP/1^0 foo', 'HTTP/2.0'],
             'trusted with partially-broken via' => ['HTTP/2.0', true, '1.0 fred, foo', 'HTTP/1.0'],
+            'trusted with simple via' => ['HTTP/2.0', true, 'HTTP/1.0', 'HTTP/1.0'],
+            'trusted with only version via' => ['HTTP/2.0', true, '1.0', 'HTTP/1.0'],
         ];
     }