CVE-2021-3902

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

An improper restriction of external entities (XXE) vulnerability in dompdf/dompdf's SVG parser allows for Server-Side Request Forgery (SSRF) and deserialization attacks. This issue affects all versions prior to 2.0.0. The vulnerability can be exploited even if the isRemoteEnabled option is set to false. It allows attackers to perform SSRF, disclose internal image files, and cause PHAR deserialization attacks.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-611

Affected software

No affected versions have been published.

Timeline

Published
Nov 15, 2024
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2021-3902: Critical severity, CVSS 9.8 | Vulnix