All vulnerabilities

WordPress core

CVE-2018-20149

In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.

Severity
Medium 5.4
Published
14 Dec 2018
Last changed
17 Jun 2026
Added to UpHeron
17 Oct 2026
Fixed in
4.9.9, 5.0.1
Sources
NVD

Affected software

SoftwareAffected versions
WordPressWordPress core · cpe:a:wordpress:wordpress
  • Every version before 4.9.9
  • From 5.0 before 5.0.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-20149
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-20149