CVE-2025-66296
high-risk
Published 2025-12-01
Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access. This vulnerability is fixed in 1.8.0-beta.27.
Do I need to act?
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0.07% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (2)
52
/ 100
high-risk
Severity
30/34 · Critical
Exploitability
0/34 · Minimal
Exposure
22/34 · High