CodeIgniter4 Potential Session Handlers Vulnerability
Impact
When an application uses (1) multiple session cookies (e.g., one for user pages and one for admin pages) and (2) a session handler is set to DatabaseHandler, MemcachedHandler, or RedisHandler, then if an attacker gets one session cookie (e.g., one for user pages), they may be able to access pages that require another session cookie (e.g., for admin pages).
Patches
Upgrade to version 4.2.11 or later.
Workarounds
- Use only one session cookie.
References
For more information
If you have any questions or comments about this advisory:
- Open an issue in codeigniter4/CodeIgniter4
- Email us at SECURITY.md
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | codeigniter4/framework | < 4.2.11 | 4.2.11 |
References
- https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-6cq5-8cj7-g558
- https://nvd.nist.gov/vuln/detail/CVE-2022-46170
- https://github.com/codeigniter4/CodeIgniter4/commit/f9fb6574fbeb5a4aa63f7ea87296523e10db9328
- https://codeigniter4.github.io/userguide/libraries/sessions.html#session-drivers
- https://github.com/FriendsOfPHP/security-advisories/blob/master/codeigniter4/framework/CVE-2022-46170.yaml
- https://github.com/codeigniter4/CodeIgniter4
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L- Weakness (CWE)
CWE-287- Platform
- Composer
- Package
codeigniter4/framework- Disclosed
- 22.12.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6cq5-8cj7-g558 - CC BY 4.0
Vulnerability history: codeigniter4/framework
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 19
- First → latest
- 01.2022 08.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 6
- High 8
- Medium 4
- Low 1
Disclosures per year
- 2022: 9
- 2023: 2
- 2024: 1
- 2025: 2
- 2026: 5
-
CodeIgniter4 Potential Session Handlers Vulnerability this entry
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