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CVE-2023-50251

19
FAUCET Score

CVE-2023-50251 is a high-severity vulnerability affecting php-svg-lib, including its use in dompdf, where an attacker can trigger infinite recursion by crafting a malicious SVG file with a specially formed 'use' tag. This can lead to denial of service through memory exhaustion, rendering the system unable to process requests. The vulnerability has a CVSS score of 7.5 (High) due to its network-based attack vector and low attack complexity, allowing unauthenticated attackers to cause high availability impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.5.1CPE matchmatch criteria
cpe:2.3:a:dompdf:php-svg-lib:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 30th percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: phenx/php-svg-libFixed in: 0.5.1
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-ff5x-7qg5-vwf2medium

Denial of service caused by infinite recursion when parsing SVG document

Dec 13, 2023

References

github.com / dompdf/php-svg-lib/commit/88163cbe562d9b391b3a352e54d9c89d02d77ee0
Patch
github.com / dompdf/php-svg-lib/security/advisories/GHSA-ff5x-7qg5-vwf2
ExploitVendor Advisory