CVE-2022-31140

Valinor error messages leading to potential data exfiltration before v0.12.0

<?php

namespace My\App;

use CuyZ\Valinor\Mapper\MappingError;
use CuyZ\Valinor\Mapper\Tree\Node;
use CuyZ\Valinor\Mapper\Tree\NodeTraverser;
use CuyZ\Valinor\MapperBuilder;

require_once __DIR__ . '/Valinor/vendor/autoload.php';

final class Money
{
    private function __construct(public readonly string $amount)
    {
    }

    public static function fromString(string $money): self
    {
        if (1 !== \preg_match('/^\d+ [A-Z]{3}$/', $money)) {
            throw new \InvalidArgumentException(\sprintf('Given "%s" is not a recognized monetary amount', $money));
        }
        
        return new self($money);
    }
}

class Foo
{
    public function __construct(
        private readonly Money $a,
        private readonly Money $b,
        private readonly Money $c,
    ) {}
}

$mapper = (new MapperBuilder())
    ->registerConstructor([Money::class, 'fromString'])
    ->mapper();

try {
    var_dump($mapper->map(Foo::class, [
        'a' => 'HAHA',
        'b' => '100 EUR',
        'c' => 'USD 100'
    ]));
} catch (MappingError $e) {
    $messages = (new NodeTraverser(function (Node $node) {
        foreach ($node->messages() as $message) {
            var_dump([
                '$message',
                $message->path(),
                $message->body()
            ]);
        }
        return '';
    }))->traverse($e->node());

    iterator_to_array($messages);
}

❯ php value-object-conversion.php
array(3) {
  [0]=>
  string(8) "$message"
  [1]=>
  string(1) "a"
  [2]=>
  string(48) "Given "HAHA" is not a recognized monetary amount"
}
array(3) {
  [0]=>
  string(8) "$message"
  [1]=>
  string(1) "c"
  [2]=>
  string(51) "Given "USD 100" is not a recognized monetary amount"
}

CVE-2022-31140 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.12.0); upgrading removes the vulnerable code path.

Kodem intelligence

Already deployed Kodem?

1. What is CVE-2022-31140? CVE-2022-31140 is a high-severity security vulnerability in cuyz/valinor (composer), affecting versions < 0.12.0. It is fixed in 0.12.0.
2. How severe is CVE-2022-31140? CVE-2022-31140 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of cuyz/valinor are affected by CVE-2022-31140? cuyz/valinor (composer) versions < 0.12.0 is affected.
4. Is there a fix for CVE-2022-31140? Yes. CVE-2022-31140 is fixed in 0.12.0. Upgrade to this version or later.
5. Is CVE-2022-31140 exploitable, and should I be worried? Whether CVE-2022-31140 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2022-31140 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2022-31140? Upgrade cuyz/valinor to 0.12.0 or later.

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