Critical severity · published Aug 25, 2026
CVE-2026-56710
Grav Login Plugin before 1.0.16 Privilege Escalation via Unlock
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Grav Login plugin versions before 1.0.16 fail to validate the target account's privilege level in the onApiUserListRowAction unlock handler. An attacker with api.users.write permission can clear login lockout counters on admin.super accounts, removing brute-force protection from the highest-privilege accounts without requiring equivalent permissions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
grav · getgrav
before 1.0.16 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56710
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56710
github.com
https://github.com/getgrav/grav/security/advisories/GHSA-985r-mpj8-5rqw
www.vulncheck.com
https://www.vulncheck.com/advisories/grav-login-plugin-before-privilege-escalation-via-unlock
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