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CriticalVulnerabilityCVE-2026-112292updated 25 Oct 2026, 15:20 UTC

CheckCle monitoring app lets anyone read, change and delete its data

CheckCle is a tool that watches whether your websites and servers are up. Because its database is left open without login checks, anyone on the internet could read secret keys, turn off alerts, or erase monitoring records.

Official, 2 sources
SeverityCriticalCVSS 9.3 of 10
Being exploited?UnclearNo reports either way yet
Fix available?UnclearNo fixed version published in the sources yet
How sure is this?Official, 2 sourcesBacked by an official source

How the attack works simplified

  1. 1AttackerAnyone on the internet
  2. 2Public API requestCalls /api/collections/<name>/records
  3. 3Open collectionsEmpty API rules skip login checks
  4. 4Secrets read or changedTokens stolen, alerts disabled, data deleted
  5. ResultAttacker reads, changes or deletes monitoring data

What happened

CheckCle through version 1.6.0 ships PocketBase collections with empty API rules, so /api/collections/<name>/records endpoints accept unauthenticated read, update and delete requests (missing authorization).

Why it is dangerous: Attackers can steal server_token and alert_configuration secrets, silence alerting so outages go unnoticed, alter public status pages, or delete monitoring history.

Are you affected?

You are affected if you run CheckCle version 1.6.0 or earlier with its default PocketBase collections exposed to the network.

CheckCle through 1.6.0

What to do

  1. Restrict network access to the CheckCle instance so it is not reachable from the internet
  2. Check for a fixed CheckCle release in the GitHub advisory GHSA-52m4-ffr8-945g and update to it
  3. Rotate server_token values and alert_configuration secrets if the instance was exposed

Timeline

  1. 19 Oct 2026, 14:17 UTC
    Publicly disclosed
  2. 19 Oct 2026, 14:17 UTC
    Reported by NVD · NVD
  3. 25 Oct 2026, 15:20 UTC
    GitHub Advisory reported on it · GitHub Advisory

Sources 2 reports, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
CVE-2026-112292 · GHSA-52m4-ffr8-945g
CVSS
9.3 / 10
EPSS
0.3% chance of exploitation within 30 days
Disclosed
19 Oct 2026, 14:17 UTC
On Zero Radar
before the radar started
Last change
25 Oct 2026, 15:20 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

CheckCle monitoring app lets anyone read, change and delete its data · Zero Radar