CVE-2026-80203Network attack vector

Super-admin account manipulation via unchecked API-key scope

Published Aug 26, 2026 · Updated Aug 28, 2026

Incorrect authorization in the GetGrav Grav API plugin before 1.0.18 allows remote authenticated users to modify super-admin accounts. UsersController.php checks the acting account with isSuperAdmin() instead of checking the presented key with isSuperWithinScope(). A lower-scoped key tied to a super-admin can disable another super-admin's 2FA or create, delete, and revoke credentials.

CVSS severity9.3
Critical
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in the GetGrav Grav API plugin before 1.0.18 allows remote authenticated users to modify super-admin accounts. UsersController.php checks the acting account with isSuperAdmin() instead of checking the presented key with isSuperWithinScope(). A lower-scoped key tied to a super-admin can disable another super-admin's 2FA or create, delete, and revoke credentials.

The record

CVE
CVE-2026-80203
Published
Aug 26, 2026
Updated
Aug 28, 2026
Vendor
GetGrav
Product
Grav
Classifications
CWE-863, T1098
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.0.18

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

GetGrav · Gravversion=0 <1.0.18

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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