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CVE-2015-4089

22
FAUCET Score

CVE-2015-4089 describes multiple Cross-Site Request Forgery (CSRF) vulnerabilities in the WP Fastest Cache plugin for WordPress, specifically affecting versions prior to 0.8.3.5. These vulnerabilities allow remote attackers to hijack authenticated user sessions to perform actions such as saving options, deleting cache, or adding cache timeouts. With a CVSS score of 8.8 (High), the vulnerability is easily exploitable over a network with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.8.3.4CPE matchmatch criteria
cpe:2.3:a:wpfastestcache:wp_fastest_cache:*:*:*:*:*:wordpress:*:*

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
0.99%
Probability of exploitation in next 30 days
EPSS Percentile
58.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0099 is in the 60th percentile among its peer group of 14,855 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, 0.2 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

Remediation records are not available for this CVE.

References

wordpress.org / plugins/wp-fastest-cache
Third Party Advisory
wpvulndb.com / vulnerabilities/9756
openwall.com / lists/oss-security/2015/05/26/20
Mailing ListThird Party Advisory