---
id: "CVE-2026-117604"
kind: "vulnerability"
aliases: ["CVE-2026-117604"]
title: "Grav CMS: debugger flaw lets anonymous visitors read admin passwords"
severity: "high"
cvss: 8.7
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["grav", "php", "reverse-proxy", "runtime", "self-hosted"]
not_affected_if: ["debugger-disabled", "versions-1.7.53.6-or-later"]
published_at: "2026-10-27T15:16:57+00:00"
first_seen_at: "2026-10-27T15:32:58+00:00"
updated_at: "2026-10-27T15:33:29+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-117604", "first_seen_at": "2026-10-27T15:32:58+00:00"}]
---

# Grav CMS: debugger flaw lets anonymous visitors read admin passwords

Grav CMS versions from 1.7.53.3 before 1.7.53.6 check debugger access in a way that treats requests from the loopback address as trusted. Behind a reverse proxy on the same host, outside requests look like loopback, so an unauthenticated visitor can read /__clockwork/ profiler records, which include administrator plaintext passwords and configuration credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Grav version with `bin/grav version` or the version line in the admin panel; affected range is `1.7.53.3` up to but not including `1.7.53.6`.
- Confirm whether the debugger is enabled in `user/config/system.yaml` and whether a reverse proxy on the same host forwards public traffic to Grav.
- Request `/__clockwork/app` from outside the network and see whether profiler data is returned.

## Fix

- Upgrade Grav to `1.7.53.6` or later.
- Disable the debugger in `user/config/system.yaml` until upgraded.
- Rotate administrator passwords and any configuration credentials stored in the site if the debugger was exposed.

## Timeline

- 2026-10-27T15:32:58+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-117604

## From the sources

Grav from 1.7.53.3 before 1.7.53.6 contains an authorization bypass in Debugger::isDebuggerRequestAuthorized() that allows unauthenticated visitors to read /__clockwork/ profiler data via a loopback REMOTE_ADDR fallback. Behind a same-host reverse proxy, remote requests appear as loopback, letting attackers read stored records including administrator plaintext passwords and configuration credentials.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_