Is CVE-2017-9233 actively exploited?

CVE-2017-9233 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2017-9233?

CVE-2017-9233 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2017-9233?

Patch guidance is available from libexpat project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-9233.

Fix CVE-2017-9233 - HIGH libexpat project libexpat

Q: Which products are affected by CVE-2017-9233?

9 products: libexpat project libexpat, python python, python python, python python, python python, and 4 more.

Description

XML External Entity vulnerability in libexpat 2.2.0 and earlier (Expat XML Parser Library) allows attackers to put the parser in an infinite loop using a malformed external entity definition from an external DTD.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-611 · XML External Entity (XXE)CWE-835

Metadata

Primary Vendor: LIBEXPAT_PROJECT
Published: 7/25/2017
Last Modified: 4/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

libexpat_project : libexpatpython : pythonpython : pythonpython : pythonpython : pythonpython : pythondebian : debian_linuxdebian : debian_linuxdebian : debian_linux

Remediation Guidance

Executive Summary

Cite this page

CVE-2017-9233. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2017-9233

View on NIST NVD

CVE-2017-9233 vulnerability