# CVE-2026-53933

## Summary

- **CVE ID:** CVE-2026-53933
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-203
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 9, 2026

## Description

Maravel, a PHP framework oriented towards dependency injection, prior to version 10.73.1 has a side-channel information disclosure issue. When a route was compiled with dynamic placeholders (e.g., `/api/v1/users/{id}`), the raw string placeholder key was mistakenly registered into the flat static route checklist. An attacker scanning endpoints could intentionally pass the literal template syntax (e.g., `GET /api/v1/users/{id}`) to force an unexpected match against the static map. Because the dynamic tree engine was bypassed, no arguments were captured. This forced modern PHP 8+ versions to throw a native `ArgumentCountError`, resulting in a 500 Internal Server Error instead of a uniform 404 Not Found. By tracking which fuzz patterns exploded into a 500 error, a malicious actor could programmatically profile and map out internal route parameter names and controller schemas. Version 10.73.1 contains a patch. As a workaround, mitigate this side-channel leak by implementing a defensive check in a global middleware. This will reject any literal brace patterns before they reach the router engine.

## Affected Products

- macropay-solutions — maravel-framework (< 10.73.1)

## References

- [CNA](https://web.archive.org/web/20260511235846/https://packagist.org/packages/macropay-solutions/maravel-framework)
- [CNA](https://web.archive.org/web/20250620110641/https://github.com/macropay-solutions/maravel/wiki)
- [CNA](https://web.archive.org/web/20260316211934/https://macropay-solutions.github.io/maravel-docs)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.32%
- **EPSS Percentile:** 25.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._