Is CVE-2023-24813 actively exploited?

No active exploitation of CVE-2023-24813 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-24813 be exploited remotely?

Yes. CVE-2023-24813 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-24813?

CVE-2023-24813 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-24813

CWE-436Published: February 7, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Dompdf is an HTML to PDF converter written in php. Due to the difference in the attribute parser of Dompdf and php-svg-lib, an attacker can still call arbitrary URLs with arbitrary protocols. Dompdf parses the href attribute of `image` tags and respects `xlink:href` even if `href` is specified. However, php-svg-lib, which is later used to parse the svg file, parses the href attribute. Since `href` is respected if both `xlink:href` and `href` is specified, it's possible to bypass the protection on the Dompdf side by providing an empty `xlink:href` attribute. An attacker can exploit the vulnerability to call arbitrary URLs with arbitrary protocols if they provide an SVG file to the Dompdf. In PHP versions before 8.0.0, it leads to arbitrary unserialize, which will lead, at the very least, to arbitrary file deletion and might lead to remote code execution, depending on available classes. This vulnerability has been addressed in commit `95009ea98` which has been included in release version 2.0.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.

NVD Source

Technical Analysis

CVE-2023-24813 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.