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CVE-2018-6009

26
FAUCET Score

CVE-2018-6009 is a high-severity vulnerability affecting Yii Framework 2.x versions prior to 2.0.14. It stems from the switchIdentity function in web/User.php failing to regenerate the CSRF token when a user's identity changes, leading to a Cross-Site Request Forgery (CSRF) weakness (CWE-352). This vulnerability has a CVSS score of 8.8, indicating a high potential for impact on confidentiality, integrity, and availability, and can be exploited remotely with low attack complexity, requiring user interaction. Despite its severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.0.0CPE matchmatch criteria
cpe:2.3:a:yiiframework:yiiframework:2.0.0:*:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:yiiframework:yiiframework:2.0.0:alpha:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:yiiframework:yiiframework:2.0.0:beta:*:*:*:*:*:*
2.0.0CPE matchmatch criteria
cpe:2.3:a:yiiframework:yiiframework:2.0.0:rc:*:*:*:*:*:*
2.0.1CPE matchmatch criteria
cpe:2.3:a:yiiframework:yiiframework:2.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.59%
Probability of exploitation in next 30 days
EPSS Percentile
44.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0059 is in the 46th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: yiisoft/yii2Fixed in: 2.0.14
composerpatch availablevia ghsa
Product: yiisoft/yii2-devFixed in: 2.0.14
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-cwhm-272p-3wj9high

Yii Framework Cross-Site Request Forgery (CSRF)

May 14, 2022

References

github.com / yiisoft/yii2/commit/6c0540aa2d6e0fe0fa89e4fd35bba4be5d6cece7
PatchThird Party Advisory