Vulnerability Details CVE-2026-24895
FrankenPHP is a modern application server for PHP. Prior to 1.11.2, FrankenPHP’s CGI path splitting logic improperly handles Unicode characters during case conversion. The logic computes the split index (for finding .php) on a lowercased copy of the request path but applies that byte index to the original path. Because strings.ToLower() in Go can increase the byte length of certain UTF-8 characters (e.g., Ⱥ expands when lowercased), the computed index may not align with the correct position in the original string. This results in an incorrect SCRIPT_NAME and SCRIPT_FILENAME, potentially causing FrankenPHP to execute a file other than the one intended by the URI. This vulnerability is fixed in 1.11.2.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.4%
CVSS Severity
CVSS v3 Score 9.8
Products affected by CVE-2026-24895
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cpe:2.3:a:php:frankenphp:1.0.0
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cpe:2.3:a:php:frankenphp:1.0.1
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cpe:2.3:a:php:frankenphp:1.0.2
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cpe:2.3:a:php:frankenphp:1.0.3
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cpe:2.3:a:php:frankenphp:1.1.0
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cpe:2.3:a:php:frankenphp:1.1.1
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cpe:2.3:a:php:frankenphp:1.1.2
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cpe:2.3:a:php:frankenphp:1.1.3
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cpe:2.3:a:php:frankenphp:1.1.4
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cpe:2.3:a:php:frankenphp:1.1.5
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cpe:2.3:a:php:frankenphp:1.10.0
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cpe:2.3:a:php:frankenphp:1.10.1
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cpe:2.3:a:php:frankenphp:1.11.0
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cpe:2.3:a:php:frankenphp:1.11.1
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cpe:2.3:a:php:frankenphp:1.2.0
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cpe:2.3:a:php:frankenphp:1.2.1
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cpe:2.3:a:php:frankenphp:1.2.2
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cpe:2.3:a:php:frankenphp:1.2.3
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cpe:2.3:a:php:frankenphp:1.2.4
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cpe:2.3:a:php:frankenphp:1.2.5
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cpe:2.3:a:php:frankenphp:1.3.0
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cpe:2.3:a:php:frankenphp:1.3.1
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cpe:2.3:a:php:frankenphp:1.3.2
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cpe:2.3:a:php:frankenphp:1.3.3
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cpe:2.3:a:php:frankenphp:1.3.4
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cpe:2.3:a:php:frankenphp:1.3.5
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cpe:2.3:a:php:frankenphp:1.3.6
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cpe:2.3:a:php:frankenphp:1.4.0
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cpe:2.3:a:php:frankenphp:1.4.1
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cpe:2.3:a:php:frankenphp:1.4.2
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cpe:2.3:a:php:frankenphp:1.4.3
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cpe:2.3:a:php:frankenphp:1.4.4
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cpe:2.3:a:php:frankenphp:1.5.0
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cpe:2.3:a:php:frankenphp:1.6.0
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cpe:2.3:a:php:frankenphp:1.6.1
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cpe:2.3:a:php:frankenphp:1.6.2
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cpe:2.3:a:php:frankenphp:1.7.0
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cpe:2.3:a:php:frankenphp:1.8.0
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cpe:2.3:a:php:frankenphp:1.9.0
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cpe:2.3:a:php:frankenphp:1.9.1