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CVE-2026-100670

8.8 HIGHpublic exploit available

Published 2026-09-26 · Updated 2026-09-26

AI risk analysis

Summary
This vulnerability allows an authenticated backend operator to escalate their privileges to full super-admin by manipulating the access map, leading to control over critical system components.
Exploitability
Exploitation requires an authenticated backend operator with admin.users permission but lacking admin.super, making it moderately exploitable.
Blast radius
If exploited, the attacker can gain full control over the system, including configuration, plugin and theme installation, file management, and all user accounts.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to Grav CMS 2.0.25 or later.
auth-bypasspriv-escalationwebcms

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

Grav CMS 2.0.14 through 2.0.24 contains a privilege escalation vulnerability in the group and account blueprints. The access map is gated by a `security@: admin.super` guard that is resolved by the field's exact path, so a submitted flat dot-notation key such as `access.admin.super` (instead of the nested `access[admin][super]`) matches no blueprint rule, survives BlueprintSchema::filterArray() and flattening, and is written by FlexObject::update() via setNestedProperty(), which splits on `.` and reconstructs the nested value. An authenticated backend operator using the flex accounts backend who holds admin.users but not admin.super can therefore grant admin.super to their own account or to a group they belong to and escalate to full super-admin, gaining control over configuration, plugin and theme installation, the file manager, and all accounts. Fixed in 2.0.25, which drops any dotted key whose ancestor path is disabled or marked validate.ignore.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-639

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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