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Vulnerability record · CVE-2026-56710 · published 25 August 2026

CVE-2026-56710: Incorrect authorization vulnerability

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.

9.3 CVSS 4.0 Critical EPSS 0.51% · top 58.7% CWE-863 · Incorrect authorization Deferred
9.3CVSS 4.0 base score
0.51%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
31 Aug 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/getgrav/grav/security/advisories/GHSA-985r-mpj8-5rqw
https://www.vulncheck.com/advisories/grav-login-plugin-before-privilege-escalation-via-unlock

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Source: NIST National Vulnerability Database (record CVE-2026-56710), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.