What’s Vulnerable › Vulnerabilities

CVE-2018-12071

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-17 · updated 2026-06-17
• Weakness: CWE-384

Description

A Session Fixation issue exists in CodeIgniter before 3.1.9 because session.use_strict_mode in the Session Library was mishandled.

Affected products

• CodeIgniter4: before 3.1.9 — fixed in 3.1.9

How to fix

Upgrade to a fixed version: CodeIgniter4 3.1.9. Check the vendor advisory for mitigations.

References

• https://github.com/bcit-ci/CodeIgniter/commit/800a20d6c4662d99ae0988b2f8f2238bb8bb29db
• https://www.codeigniter.com/user_guide/changelog.html
• https://www.codeigniter.com/user_guide/changelog.html

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