All vulnerabilities

Servers and applications

CVE-2026-34356

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended to upgrade to version 2.4.68, which fixes the issue.

Severity
High 7.5
Published
8 Jun 2026
Last changed
23 Jul 2026
Added to UpHeron
17 Oct 2026
Fixed in
2.4.68
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • From 2.4.0 before 2.4.68

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-34356
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34356