CVE-2026-62387 (GCVE-0-2026-62387)

Vulnerability from cvelistv5 – Published: 2026-07-17 00:07 – Updated: 2026-07-17 12:03 X_Open Source
VLAI
Title
Grav < 1.0.0-rc.16 CORS Misconfiguration via API Plugin
Summary
The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 shipped Access-Control-Allow-Origin: * as its default CORS configuration on all responses, including authenticated endpoints and preflight (OPTIONS) responses. Because the plugin accepts credentials via the Authorization and X-API-Token headers (set programmatically by JavaScript rather than via cookies), an attacker who obtains a valid access token (e.g., via log leakage, Referer headers, browser history, or network capture) can issue fully authenticated cross-origin requests from any malicious website to read sensitive data and perform write operations as the token's user. Fixed in 1.0.0-rc.16.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-17 12:03 UTC
CWE
  • CWE-942 - Permissive Cross-domain Security Policy with Untrusted Domains
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6843 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
getgrav grav Affected: 0 , < 1.0.0-rc.16 (semver)
Unaffected: 1.0.0-rc.16 (semver)
    cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-30 00:00
Credits
nicl4ssic
Show details on NVD website
To clipboard 

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