# CVE-2026-56710: Grav Login plugin privilege escalation in unlock handler

Source: https://junglewise.ai/threats/cve-2026-56710-grav-login-plugin-privilege-escalation-in-unlock-handler  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-56710 · Severity: critical · CVSS 9.8 · Published 2026-08-25

The Grav Login plugin exposes an account unlock feature via its API that clears failed login attempt counters. The feature requires api.users.write permission but fails to verify that the calling user has authority over the target account. An attacker with basic user-management permissions can repeatedly unlock admin super-user accounts, removing brute-force protection from the highest-privilege accounts without requiring equivalent permissions themselves.

Technologies: [Grav Login Plugin](https://junglewise.ai/threats/technologies/login-plugin). Vendors: [Grav](https://junglewise.ai/threats/vendors/grav).

## Quick answers

**Is CVE-2026-56710 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-56710 being exploited in the wild.

**How severe is CVE-2026-56710?** Critical severity, with a CVSS score of 9.8, published 25 August 2026.

**Which products and versions are affected?** Grav Login Plugin before 1.0.16.

**Is there a fix for CVE-2026-56710?** A patch was published on 2026-08-10: Patch version 1.0.16 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-56710 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-56710?** Check whether you run Grav Login Plugin at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a privilege escalation vulnerability caused by missing authorization checks in the onApiUserListRowAction unlock handler. The handler verifies the caller has api.users.write permission (delegated from the API plugin layer), but does not verify the target account's privilege level before clearing its lockout counters. An attacker with api.users.write permission—a separate, lower privilege than admin.super—can invoke the unlock action on any account, including admin.super accounts, effectively removing brute-force protection from the highest-value targets in the system. The vulnerability requires an authenticated attacker with api.users.write permission to exploit. Patch 1.0.16 is available.

## Affected products

- Grav Login plugin before 1.0.16

## Timeline

- 2026-08-25: disclosed: CVE-2026-56710 published
- 2026-08-10: patched: Patch version 1.0.16 released

## References

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

## Related threats

- [Grav Login plugin missing authorization in invitation task](https://junglewise.ai/threats/cve-2026-114658-grav-login-plugin-from-3-6-0-before-3-9-13-contains-a-missing)
- [Grav Login plugin email address enumeration in registration](https://junglewise.ai/threats/cve-2026-72699-grav-login-plugin-email-address-enumeration-in-registration)
- [getgrav grav-plugin-login CSRF in regenerate2FASecret task](https://junglewise.ai/threats/cve-2026-62236-getgrav-grav-plugin-login-csrf-in-regenerate2fasecret-task)
- [Grav Login plugin privilege escalation in registration handler](https://junglewise.ai/threats/cve-2026-42613-grav-login-plugin-privilege-escalation-in-registration-handler)