CVE-2018-12071
CodeIgniter Session Fixation Vulnerability
A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.
- Record
CVE-2018-12071- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-384
- Updated
- 2026-11-02
CVE List No score
A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.
- Record
CVE-2018-12071- Updated
- 2026-11-02
EUVDEUVD-2022-3879
A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.
- Record
EUVD-2022-3879- CVSS
- 0.0 None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-g434-3q2j-hj4r
CodeIgniter Session Fixation Vulnerability
A Session Fixation issue exists in CodeIgniter before 3.1.10 because session.use_strict_mode in the Session Library was mishandled.
- Record
GHSA-g434-3q2j-hj4r- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-384
- Updated
- 2026-11-02
OSV
A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.
- Record
CVE-2018-12071- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-g434-3q2j-hj4r
CodeIgniter Session Fixation Vulnerability
A Session Fixation issue exists in CodeIgniter before 3.1.10 because session.use_strict_mode in the Session Library was mishandled.
- Record
GHSA-g434-3q2j-hj4r- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-384
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
codeigniter/frameworkPackagist |
before 3.1.10 | 3.1.10 |
codeigniter/frameworkPackagist |
before 3.1.10, plus listed versions 3.0.03.0.13.0.1rc3.0.1rc23.0.2 Show 17 moreShow less3.0.33.0.43.0.53.0.63.0rc3.0rc23.0rc33.1.03.1.13.1.23.1.33.1.43.1.53.1.63.1.73.1.83.1.9 |
3.1.10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-12071 is a critical vulnerability (CVSS 9.8) in Codeigniter, published June 17, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.50%, the 74th percentile. Fixed in codeigniter/framework 3.1.10.
References
codeigniter.com/user_guide/changelog.html
github.com/bcit-ci/CodeIgniter/commit/800a20d6c4662d99ae0988b2f8f2238bb8bb29db
nvd.nist.gov/vuln/detail/CVE-2018-12071
web.archive.org/web/20181115214804/https://www.codeigniter.com/user_guide/changelog.html