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CVE-2026-58656 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token from access logs, proxy logs, browser history, or Referrer headers can create persistent backdoor super-admin accounts and exfiltrate sensitive configuration and user data.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URL	Source(s)	Tag(s)
https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp	CISA-ADP	AdvisoryExploitTechnical AnalysisVendor
https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp	[email protected]	AdvisoryExploitTechnical AnalysisVendor
https://www.vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter	[email protected]	Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-598	Use of GET Request Method With Sensitive Query Strings	[email protected]

Affected Products

Product	Versions
Grav API	<= 1.0.0-rc.15 (semver)
CPE cpe:2.3:a:getgrav:grav:::::::: Remediation Upgrade: 1.0.0-rc.16moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Jul 8, 2026	CVE Modified	CISA-ADP
Jul 8, 2026	New CVE Received	[email protected]