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CVE-2026-128018 FrankenPHP before 1.13.4 Pending Worker Request Denial of Service

6.3 mediumEPSS 0.4%

Medium (6.3) in php frankenphp. EPSS 0.4% estimated probability of exploitation activity in the next 30 days.

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FrankenPHP before 1.13.4 contains a denial of service vulnerability in worker mode where frankenphp_handle_request() returns false without finishing the dequeued request after a fatal error during request startup. Attackers who trigger startup fatal errors against worker scripts that keep calling frankenphp_handle_request() can leave client requests hanging indefinitely while the worker continues running.

Severity

CVSS 4.0

6.3 medium
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

3.7 low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS
0.4% estimated probability of exploitation activity in the next 30 days; 38th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-404 Improper Resource Shutdown or Release
Published
Modified
Assigned by
VulnCheck (CNA)
NVD analysis
Deferred: the NVD does not plan to analyze it
Record from
the NVD, synced

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Affected

Versions

From the CNA's record in the CVE List.

ProductAffected
php frankenphpbefore 1.13.4

Attack patterns (CAPEC)

  • CAPEC-125 Flooding Likelihood: High · Severity: Medium
  • CAPEC-130 Excessive Allocation Likelihood: Medium · Severity: Medium
  • CAPEC-131 Resource Leak Exposure Likelihood: Medium · Severity: Medium
  • CAPEC-494 TCP Fragmentation
  • CAPEC-495 UDP Fragmentation
  • CAPEC-496 ICMP Fragmentation
  • CAPEC-666 BlueSmacking Likelihood: Medium · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

History

  1. The NVD deferred its analysis

Changes since this site first stored the record. The same for every record: /api/public/changes.

References

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