All vulnerabilities

Servers and applications

CVE-2026-93682

When the HTTP stream wrapper follows a redirect and the response carries a Location header with an empty value, the redirect code reads one byte past the end of the heap buffer holding the location. The value of that out-of-bounds byte decides which redirect target is built, so a malicious server controls whether the client is sent to the host root or to the current directory.

Severity
Medium 5.8
Published
25 Sept 2026
Last changed
23 Oct 2026
Added to UpHeron
24 Oct 2026
Fixed in
8.2.34, 8.3.35, 8.4.26, 8.5.11
Sources
NVD

Affected software

SoftwareAffected versions
PHPServers and applications · cpe:a:php:php
  • From 8.2.0 before 8.2.34
  • From 8.3.0 before 8.3.35
  • From 8.4.0 before 8.4.26
  • From 8.5.0 before 8.5.11

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-93682
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-93682