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CVE-2018-12071 — Vulnerability in codeigniter/framework — CVE Details

CRITICAL

CodeIgniter Session Fixation Vulnerability

Published May 14, 2022Updated June 17, 2025Source: osv

Summary

A Session Fixation issue exists in CodeIgniter before 3.1.10 because `session.use_strict_mode` in the Session Library was mishandled.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised June 17, 2025 — 1130 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer
Update codeigniter/framework to 3.1.10 or later
composer require "codeigniter/framework:^3.1.10"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: Packagist (1).

PackageEcosystemAffectedFixed In
codeigniter/framework
Packagist
3.0.0, 3.0.1, 3.0.1rc, 3.0.1rc2 (+18 more)3.1.10

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2018-12071?
CodeIgniter Session Fixation Vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2018-12071?
CVE-2018-12071 affects codeigniter/framework. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2018-12071 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-g434-3q2j-hj4r

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