diff --git a/Request.php b/Request.php
index 922014133..42a3a8a2c 100644
--- a/Request.php
+++ b/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/Tests/RequestTest.php b/Tests/RequestTest.php
index f1aa0ebea..a2eace70e 100644
--- a/Tests/RequestTest.php
+++ b/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'],
];
}
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