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Vulnerability record · CVE-2014-8686 · published 19 September 2017

CVE-2014-8686: Codeigniter vulnerability

Codeigniter · Codeigniter

CodeIgniter before 2.2.0 makes it easier for attackers to decode session cookies by leveraging fallback to a custom XOR-based encryption scheme when the Mcrypt extension for PHP is not available.

9.8 CVSS 3.0 Critical EPSS 37% · top 1.5% CWE-310 · CWE-310
9.8CVSS 3.0 base score, v2 5.0
37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

CodeIgniter before 2.2.0 makes it easier for attackers to decode session cookies by leveraging fallback to a custom XOR-based encryption scheme when the Mcrypt extension for PHP is not available.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html Third Party AdvisoryVDB Entry
https://beyondbinary.io/articles/seagate-nas-rce/ ExploitThird Party Advisory
https://codeigniter.com/userguide2/changelog.html Vendor Advisory
https://www.dionach.com/blog/codeigniter-session-decoding-vulnerability Third Party Advisory
http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html Third Party AdvisoryVDB Entry
https://beyondbinary.io/articles/seagate-nas-rce/ ExploitThird Party Advisory
https://codeigniter.com/userguide2/changelog.html Vendor Advisory
https://www.dionach.com/blog/codeigniter-session-decoding-vulnerability Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2014-8686), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.