CVE-2026-63408: high-severity vulnerability in getgrav grav-plugin-api
Grav API Plugin: JWT Access Token Accepted via `?token=` URL Query Parameter
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
getgrav · grav-plugin-apiRelated CVEs — getgrav grav-plugin-api
In the same product, most dangerous first.
CVE-2026-112779CRITICALGrav API Plugin before 1.0.42 Cache Exhaustion and Page Permission BypassEPSS 0.8%CVE-2026-62666HIGHGrav API Plugin: non-super api.users.write manager -> super-admin via createApiKey (incomplete fix of CVE-2026-59190); + 2FA strip of superEPSS 0.6%CVE-2026-72833HIGHGrav 1.0.6 through 1.0.11 Privilege Escalation via Scoped API KeysEPSS 0.5%CVE-2026-72826HIGHGrav API Plugin before 1.0.13 Scope Bypass via createApiKeyEPSS 0.5%CVE-2026-62668CRITICALGrav API Plugin: Webhook SSRF via Unrestricted cURL ProtocolsEPSS 0.4%CVE-2026-86196HIGHGrav API Plugin before 1.0.20 Authentication Bypass via Host HeaderEPSS 0.4%