Authenticated super-admin escalation via profile mass assignment
Published Jul 22, 2026 · Updated Jul 22, 2026
Privilege escalation in the Grav Login plugin 3.8.11 and earlier allows remote authenticated users to gain super-admin access via profile updates. The processUserProfile() update_user handler copies configured groups and access fields from form data into the default DataUser account without stripping privilege keys. A low-privilege account with site.login can exploit only installations that expose those fields under the regular backend, then control the admin panel, scheduler, and Twig evaluation.
Summary
What happened
Privilege escalation in the Grav Login plugin 3.8.11 and earlier allows remote authenticated users to gain super-admin access via profile updates. The processUserProfile() update_user handler copies configured groups and access fields from form data into the default DataUser account without stripping privilege keys. A low-privilege account with site.login can exploit only installations that expose those fields under the regular backend, then control the admin panel, scheduler, and Twig evaluation.
The record
- CVE
- CVE-2026-65603
- Published
- Jul 22, 2026
- Updated
- Jul 22, 2026
- Vendor
- Grav
- Product
- Grav
- Classifications
- CWE-269, CWE-915, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 22, 2026CVE publishedPublication date reported by the CVE source.
- Jul 22, 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.
- Affected versionversion=0 <3.8.12
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- Vendor advisory profile-update proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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