# CVE-2026-24895

## Summary

- **CVE ID:** CVE-2026-24895
- **Severity:** HIGH
- **CVSS Score:** 8.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P)
- **CWE:** CWE-180
- **Published:** Feb 12, 2026
- **Last Modified:** Mar 12, 2026

## Description

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.

## Affected Products

- php — frankenphp (< 1.11.2)

## References

- [CNA](https://github.com/php/frankenphp/security/advisories/GHSA-g966-83w7-6w38)
- [CNA](https://github.com/php/frankenphp/commit/04fdc0c1e8fde94e2c1ad86217e962c88d27c53e)
- [CNA](https://github.com/php/frankenphp/releases/tag/v1.11.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.57%
- **EPSS Percentile:** 45.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._