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CVE-2014-8684

80
FAUCET Score

CVE-2014-8684 is a critical vulnerability affecting CodeIgniter before version 3.0 and Kohana versions 3.2.3 and earlier, and 3.3.x through 3.3.2. This flaw allows remote attackers to spoof session cookies and perform PHP object injection due to the use of standard string comparison for cryptographic hashes. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog, exploit code is publicly available, including a Metasploit module targeting Seagate Business NAS, and it has garnered significant community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.2.6CPE matchmatch criteria
cpe:2.3:a:codeigniter:codeigniter:*:*:*:*:*:*:*:*
3.2.3CPE matchmatch criteria
cpe:2.3:a:kohanaframework:kohana:3.2.3:*:*:*:*:*:*:*
3.3.0CPE matchmatch criteria
cpe:2.3:a:kohanaframework:kohana:3.3.0:*:*:*:*:*:*:*
3.3.1CPE matchmatch criteria
cpe:2.3:a:kohanaframework:kohana:3.3.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
71.71%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Metasploit: Seagate Business NAS Unauthenticated Remote Command Execution · Mar 1, 2015
ExploitDB: EDB-36264 · Mar 4, 2015
This CVE's current EPSS score of 0.7171 is in the 98th percentile among its peer group of 36,897 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: codeigniter/frameworkFixed in: 3.0.0
composerpatch availablevia ghsa
Product: kohana/coreFixed in: 3.3.3

Vendor Advisories (1)

composerGHSA-w9ph-q4h9-rwq6critical

CodeIgniter and Kohana vulnerable to PHP Object Injection

May 17, 2022

References

packetstormsecurity.com / files/130609/Seagate-Business-NAS-Unauthenticated-Remote-Command-Execution.html
Third Party AdvisoryVDB Entry
seclists.org / fulldisclosure/2014/May/54
Mailing ListThird Party Advisory
github.com / kohana/core/pull/492
Third Party Advisory
scott.arciszewski.me / research/full/php-framework-timing-attacks-object-injection
Third Party Advisory