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GHSA-xm76-r88j-vm3g

HIGH

Automad has Broken Access Control: Unauthenticated exposure of administrator bcrypt password hashes and TOTP secrets via public API endpoint

Also known asCVE-2026-45332
Published
May 27, 2026
Updated
Jun 9, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk22th percentile0.00%
0.00%0.27%0.53%0.80%0.0%0.3%0.3%Jun 26Jul 26Jul 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
🐘automad/automad

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Summary

A Broken Access Control vulnerability allows an unauthenticated attacker to retrieve the bcrypt password hash of every administrator account with a single POST request. The /_api/user-collection/create-first-user setup endpoint remains publicly accessible once initial configuration is complete and returns full serialized user data in the JSON response body.

Details

Affected version:

  • bcrypt hash exposure: >= 2.0.0-alpha.1, <= 2.0.0-beta.27
  • TOTP secret exposure: only 2.0.0-beta.27

Impact

Any Automad installation reachable over HTTP is at risk no prior account, credentials, or special network position are required to exploit this vulnerability.

Potential impacts include:

  • Credential hash exposure enabling offline brute-force or dictionary attacks: bcrypt password hashes for every administrator are returned in a single unauthenticated response. While hashes are not plaintext passwords, the salt embedded in the hash is not secret it is visible in the response. Administrators using common or weak passwords are at direct risk of having their plaintext password recovered.
  • TOTP secret exposure: The TOTP secret is included in the response starting with version 2.0.0-beta.27, the first release introducing TOTP-based two-factor authentication. If an attacker successfully recovers a plaintext password, two-factor authentication can be bypassed entirely. Only version 2.0.0-beta.27 is affected by this specific issue.
  • Information disclosure: The response discloses the absolute filesystem path to the configuration directory. While the directory structure is publicly documented, the absolute server path may expose environment-specific information.

Remediation

Update to version 2.0.0-beta.28 or later.

This issue was reported privately and fixed prior to public disclosure.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistautomad/automad2.0.0-alpha.1&&< 2.0.0-beta.282.0.0-beta.28

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for automad/automad. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update automad/automad to 2.0.0-beta.28 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xm76-r88j-vm3g is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-xm76-r88j-vm3g is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-xm76-r88j-vm3g. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary A Broken Access Control vulnerability allows an unauthenticated attacker to retrieve the bcrypt password hash of every administrator account with a single POST request. The `/_api/user-collection/create-first-user` setup endpoint remains publicly accessible once initial configuration is complete and returns full serialized user data in the JSON response body. ### Details Affected version: - bcrypt hash exposure: `>= 2.0.0-alpha.1, <= 2.0.0-beta.27` - TOTP secret exposure: only `2.0.0-beta.27` ### Impact Any Automad installation reachable over HTTP is at risk no prior acc
O3 Security · Impact-Aware SCA

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O3 detects GHSA-xm76-r88j-vm3g across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.