EUVD-2026-62541Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Requires a valid API key (PR:L); REST API is network-accessible (AV:N); no availability impact results from scope bypass alone.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
Lifecycle Timeline
4DescriptionCVE.org
Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.6, the Grav API plugin ApiKeyManager::generateKey() stores a declared scopes array, but ApiKeyAuthenticator::authenticate() does not read keyData[scopes] and returns the owning user's complete identity. AbstractApiController::requirePermission() consequently evaluates the full user ACL, so a key issued for a read-only scope can perform every write, delete, and administrative operation available to the owner. This issue is fixed in version 1.0.6.
AnalysisAI
Scope enforcement is entirely absent in the Grav API Plugin prior to 1.0.6, meaning any scoped API key silently exercises its issuing account's full permissions rather than the declared restricted subset. Holders of keys deliberately issued narrow read-only scopes - including third-party integrations and external services - can perform all write, delete, and administrative operations that the key's owning account is authorized for. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires possession of a valid Grav API Plugin API key (corresponding to PR:L in the CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The NVD CVSS 8.1 score (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) is well-calibrated: the flaw is network-accessible, requires no user interaction, and yields high confidentiality and integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to Grav API Plugin version 1.0.6, the vendor-released patch confirmed by the GitHub release at https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.6 and fix commit dfcc947f0d6758772caac290c68fe8d4c4a4874e. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all active API keys and recent API activity logs for evidence of write, delete, or administrative operations that may indicate exploitation. …
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External POC / Exploit Code
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