UpHeron
All vulnerabilities

Servers and applications

CVE-2021-21702

In PHP versions 7.3.x below 7.3.27, 7.4.x below 7.4.15 and 8.0.x below 8.0.2, when using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.

Severity
High 7.5
Published
15 Feb 2021
Last changed
17 Jun 2026
Added to UpHeron
14 Oct 2026
Fixed in
7.3.27, 7.4.15, 8.0.2
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • From 7.3.0 before 7.3.27
  • From 7.4.0 before 7.4.15
  • From 8.0.0 before 8.0.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-21702
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21702