# CVE-2026-63408

## Summary

- **CVE ID:** CVE-2026-63408
- **Severity:** HIGH
- **CVSS Score:** 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
- **CWE:** CWE-598
- **Published:** Aug 19, 2026
- **Last Modified:** Aug 19, 2026

## Description

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content.  Prior to 1.0.0-rc.16, the Grav API plugin JwtAuthenticator::extractBearerToken() accepts a JWT from the token URL query parameter on every /api/v1 route, including state-changing endpoints. Request URLs consequently expose valid access tokens through Apache, proxy, and CDN logs, browser history, and Referer headers, allowing a party with access to those records to reuse the token with the owner's API privileges. This issue is fixed in version 1.0.0-rc.16.

## Affected Products

- getgrav — grav-plugin-api (< 1.0.0-rc.16)

## References

- [CNA](https://github.com/getgrav/grav/security/advisories/GHSA-4hpj-wmpw-ghwq)
- [CNA](https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9)
- [CNA](https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.0-rc.16)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.36%
- **EPSS Percentile:** 29.3

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