CVE-2023-50252: php-svg-lib is an SVG file parsing / rendering library

Q: How do I fix CVE-2023-50252?

php-svg-lib: upgrade to 0.5.1. Exact commands for each OS are on this page.

Q: Is CVE-2023-50252 being exploited?

CVE-2023-50252 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-50252 affect?

CVE-2023-50252 affects php-svg-lib. Severity is high (CVSS 8.3). php-svg-lib is an SVG file parsing / rendering library. Prior to version 0.5.1, when handling ` ` tag that references an ` ` tag, it merges the attributes from the ` ` tag to the ` ` tag. The problem pops up especially w

This week

HIGH 8.3REMOTEUPGRADE

CVE-2023-50252 is a high-severity flaw (CVSS 8.3) affecting php-svg-lib. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 p

Why this priority

High severity
EPSS top 2%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	23.9% (top 2%)
CISA exploited list	No
Weakness	CWE-15, CWE-502
Published	2023-12-12
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: dompdf

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-12 21:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

dompdf php-svg-lib UPGRADE

Affected: < 0.5.1

Fixed in: 0.5.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy php-svg-lib || rpm -q php-svg-lib || php-svg-lib --version

2. UPGRADE to 0.5.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade php-svg-lib

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade php-svg-lib

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-50252?

php-svg-lib: upgrade to 0.5.1. Exact commands for each OS are on this page.

Is CVE-2023-50252 being exploited?

CVE-2023-50252 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-50252 affect?

CVE-2023-50252 affects php-svg-lib. Severity is high (CVSS 8.3). 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 w

How urgent is CVE-2023-50252?

Priority 64/100. High severity; EPSS top 2%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-25117 MEDIUM 6.8 UPGRADE php-svg-lib is a scalable vector graphics (SVG) file parsing/rendering library
CVE-2023-50251 MEDIUM 5.3 UPGRADE php-svg-lib is an SVG file parsing / rendering library

References

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