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Servers and applications

CVE-2017-9233

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.

Severity
High 7.5
Published
25 Jul 2017
Last changed
8 Oct 2026
Added to UpHeron
21 Oct 2026
Fixed in
2.7.15, 3.3.7, 3.4.7, 3.5.4, 3.6.2
Sources
NVD

Affected software

SoftwareAffected versions
PythonServers and applications · cpe:a:python:python
  • From 2.7.0 before 2.7.15
  • From 3.3.0 before 3.3.7
  • From 3.4.0 before 3.4.7
  • From 3.5.0 before 3.5.4
  • From 3.6.0 before 3.6.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-9233
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-9233