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Vulnerability record · CVE-2023-50252 · published 12 December 2023

CVE-2023-50252: Dompdf php-svg-lib deserialization of untrusted data vulnerability

Dompdf · Php Svg Lib

php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when handling `<use>` tag that references an `<image>` tag, it merges the attributes from the `<use>` tag to the `<image>` tag. The problem pops up especially when the `href` attribute from the `<use>` tag has not been sanitized. This can lead to an unsafe file read that can cause PHAR Deserialization vulnerability in PHP prior to version 8. Version 0.5.1 contains a patch for this issue.

9.8 CVSS 3.1 Critical EPSS 24% · top 2.2% CWE-15 · CWE-15CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when handling `<use>` tag that references an `<image>` tag, it merges the attributes from the `<use>` tag to the `<image>` tag. The problem pops up especially when the `href` attribute from the `<use>` tag has not been sanitized. This can lead to an unsafe file read that can cause PHAR Deserialization vulnerability in PHP prior to version 8. Version 0.5.1 contains a patch for this issue.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/dompdf/php-svg-lib/commit/08ce6a96d63ad7216315fae34a61c886dd2dc030 Patch
https://github.com/dompdf/php-svg-lib/security/advisories/GHSA-jq98-9543-m4cr ExploitMitigationVendor Advisory
https://github.com/dompdf/php-svg-lib/commit/08ce6a96d63ad7216315fae34a61c886dd2dc030 Patch
https://github.com/dompdf/php-svg-lib/security/advisories/GHSA-jq98-9543-m4cr ExploitMitigationVendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-50252), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.