CVE-2026-103512 PUBLISHED

Ticket host-binding bypass via spoofed client IP in P4Search

Assigner: Perforce
Reserved: 30.09.2026 Published: 05.10.2026 Updated: 05.10.2026

Perforce P4 Search prior to 2026.4.2 trusts a client-supplied address when validating certain authentication requests. An attacker holding a stolen P4 Server ticket can bypass host-based ticket restrictions and trusted-address controls, gaining access to P4 Search as the ticket's owner.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Perforce
Product	P4 (Helix Core)
Versions	Default: affected affected from 0 to 2026.4.1 (incl.) Version 2026.4.2 is unaffected

Credits

Khoa Bui (https://github.com/zenniskayy2k4) finder

References

https://portal.perforce.com/s/cve/a91Qi000003FDo1IAG/ticket-hostbinding-bypass-via-spoofed-client-ip-in-p4search

Problem Types

CWE-290 Authentication bypass by spoofing CWE