CVE-2014-8686
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 37.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 37.22% probability · 99th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 4 March 2015
- CISA KEV
- Not listed
- Weakness
- CWE-310
- Affected
- codeigniter/codeigniter
- Source
- cve@mitre.org
EPSS moved from 33.3% on 21 September 2026 to 37.2% on 4 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.htmlThird Party Advisory, VDB Entry
- https://beyondbinary.io/articles/seagate-nas-rce/Exploit, Third Party Advisory
- https://codeigniter.com/userguide2/changelog.htmlVendor Advisory
- https://www.dionach.com/blog/codeigniter-session-decoding-vulnerabilityThird Party Advisory
- http://packetstormsecurity.com/files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.htmlThird Party Advisory, VDB Entry
- https://beyondbinary.io/articles/seagate-nas-rce/Exploit, Third Party Advisory
- https://codeigniter.com/userguide2/changelog.htmlVendor Advisory
- https://www.dionach.com/blog/codeigniter-session-decoding-vulnerabilityThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.