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GHSA-5hfv-c864-qcq9

GHSA-5hfv-c864-qcq9 is a security vulnerability in ci4-cms-erp/ci4ms. O3 Security confirms whether GHSA-5hfv-c864-qcq9 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

CI4MS has a Deactivated User Session Bypass (active=0)

Also known asCVE-2026-41891
Published
May 4, 2026
Updated
May 8, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

Blast Radius

1 pkg affected
🐘ci4-cms-erp/ci4ms

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

The auth filter has the deactivated/banned user check commented out.

Details

CodeIgniter Shield's loggedIn() re-checks the status field (catching status='banned'), but does not re-check the active field for existing sessions. When an admin deactivates a user (active=0) after they have already logged in:

  • Their session cookie remains valid
  • auth()->loggedIn() still returns true
  • The commented-out code is the only mechanism that would have checked !$user->active

Evidence

<img width="981" height="654" alt="image" src="https://github.com/user-attachments/assets/6f75d144-5bcf-4a3f-bc35-bb0715c3ed05" />

Impact

  • User deactivation does NOT immediately revoke backend access
  • Deactivated user retains full access until session expires (default: 7200s)

Additional note

The commented-out block appears to be a deferred placeholder — it was written but disabled from the very first commit that introduced the filter, and has never been active. The later addition of SessionTracker (v0.31.4.0) suggests the dev was aware of the session revocation gap, but account-level deactivation (users.active = 0) remains unenforced. Could you verify if this is intentionally pending or simply forgotten and not documented?.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistci4-cms-erp/ci4ms0.26.0&&< 0.31.8.00.31.8.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ci4-cms-erp/ci4ms. 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 ci4-cms-erp/ci4ms to 0.31.8.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5hfv-c864-qcq9 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-5hfv-c864-qcq9 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-5hfv-c864-qcq9. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary The auth filter has the deactivated/banned user check commented out. ### Details CodeIgniter Shield's `loggedIn()` re-checks the `status` field (catching `status='banned'`), but does **not** re-check the `active` field for existing sessions. When an admin deactivates a user (`active=0`) after they have already logged in: - Their session cookie remains valid - `auth()->loggedIn()` still returns `true` - The commented-out code is the only mechanism that would have checked `!$user->active` ### Evidence <img width="981" height="654" alt="image" src="https://github.com/user-attachmen
O3 Security · Impact-Aware SCA

Is GHSA-5hfv-c864-qcq9 in your dependencies?

O3 detects GHSA-5hfv-c864-qcq9 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.