---
id: CVE-2026-63408
title: >-
  Grav API Plugin is a RESTful API for Grav CMS that provides full headless
  access to your site's content
summary: >-
  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 o…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-598
published: '2026-08-19'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:13:25.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63408'
references:
  - url: >-
      https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9
    label: security-advisories@github.com
  - url: 'https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.0-rc.16'
    label: security-advisories@github.com
  - url: 'https://github.com/getgrav/grav/security/advisories/GHSA-4hpj-wmpw-ghwq'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00492
epssPercentile: 0.39596
ingestedAt: '2026-09-09T21:22:45.540Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.