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CVE-2015-9539

17
FAUCET Score

CVE-2015-9539 describes a cross-site scripting (XSS) vulnerability in the Fast Secure Contact Form plugin for WordPress, affecting versions prior to 4.0.38. This medium-severity vulnerability (CVSS 6.1) allows an unauthenticated attacker to inject malicious scripts via the fs_contact_form1[welcome] parameter, potentially leading to client-side compromise. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.0.38CPE matchmatch criteria
cpe:2.3:a:fast_secure_contact_form_project:fast_secure_contact_form:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.58%
Probability of exploitation in next 30 days
EPSS Percentile
73.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0158 is in the 85th percentile among its peer group of 26,221 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

cybersecurityworks.com / zerodays/cve-2015-9539-fastsecure.html
ExploitThird Party Advisory
github.com / amansaini/fast-secure-contact-form
Third Party Advisory
github.com / cybersecurityworks/Disclosed/issues/4
ExploitThird Party Advisory
openwall.com / lists/oss-security/2015/10/27/2
ExploitMailing ListThird Party Advisory