CVE-2023-52426

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 04 Feb 2024, 00:00
Last modified:04 Nov 2025, 18:21

Vulnerability Summary

Overall Risk (default)
low
22/100
CVSS Score
5.5 MEDIUM
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

04 Feb 2024, 00:00
Published
Vulnerability first disclosed
04 Nov 2025, 18:21
Last Modified
Vulnerability information updated

Description

libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Techniques & Countermeasures

  • CWE-776•Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

    The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.

Affected Systems

  • libexpat_project•libexpat

    ≤ 2.5.0

References (7)