CVE-2026-128023
FrankenPHP before 1.13.0 Authentication Bypass via Dot-Form Header Name Aliasing
CVSS Score
7.4
EPSS Score
0.0%
EPSS Percentile
0th
FrankenPHP before 1.13.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to spoof trusted headers by sending dot-form header names that PHP rewrites to underscores. Attackers can send headers like X.Authenticated.User or X.Forwarded.For that map to $_SERVER keys, spoofing user identity, client IP, or scheme.
| CWE | CWE-290 |
| Vendor | php |
| Product | frankenphp |
| Ecosystems | |
| Industries | Technology |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
php / frankenphp
0 < 1.13.0
References
Credits
🔍 tikipiya