CVE-2026-44693 PUBLISHED

Pi-hole FTL: Unauthenticated Session Hijacking via Race Condition on Global Session Buffer

Assigner: GitHub_M
Reserved: 07.05.2026 Published: 10.06.2026 Updated: 10.06.2026

Pi-hole FTL is the core engine of the Pi-hole network-level advertisement and tracker blocker. Prior to version 6.6.1, Pi-hole FTL contains a race condition vulnerability in the HTTP session management subsystem, introduced with the v6.0 rewrite of the embedded CivetWeb-based web server. This issue has been patched in version 6.6.1.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	High

CVSS 3.1

Product Status

Vendor	pi-hole
Product	FTL
Versions	Version < 6.6.1 is affected

References

Problem Types

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE