Denial of Service Vulnerability in FrankenPHP by PHP
CVE-2026-128022

6.9MEDIUM

Key Information:

Vendor

PHP
Status
FrankenPHP
Vendor
CVE Published:
13 November 2026

What is CVE-2026-128022?

FrankenPHP versions prior to 1.13.2 are susceptible to a resource exhaustion vulnerability that can be exploited by unauthenticated users. When clients disconnect, queued requests remain active, leading to a potential denial of service condition. Attackers can exploit this by opening multiple connections and immediately closing them, which prevents the cancellation of their requests. This results in excessive consumption of PHP threads, causing delays for legitimate users sharing the same thread pool.

Affected Version(s)

frankenphp 0 < 1.13.2

frankenphp 1.13.2

References

https://github.com/php/frankenphp/security/advisories/GHS...
vendor-advisory
https://www.vulncheck.com/advisories/frankenphp-before-1....
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

alexandre-daubois
.