Information Exposure Affecting dompdf/dompdf package, versions <3.1.6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-DOMPDFDOMPDF-18306793
- published25 Jul 2026
- disclosed22 Jul 2026
- creditUnknown
Introduced: 22 Jul 2026
NewCVE-2026-55555 (opens in a new tab)How to fix?
Upgrade dompdf/dompdf to version 3.1.6 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure in the processing of CSS @font-face directives referencing local files via the file:// protocol. An attacker can determine the existence of sensitive files on the server by submitting crafted HTML and analyzing the application's response, such as memory exhaustion errors, which differ based on whether the targeted file exists. This is only exploitable if the attacker can supply unsanitized HTML input and system memory limits are configured in a way that allows observable differences in behavior.