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CVE-2021-34653

20
FAUCET Score

CVE-2021-34653 describes a Reflected Cross-Site Scripting (XSS) vulnerability in the WP Fountain WordPress plugin, affecting versions up to and including 1.5.9. This medium-severity vulnerability (CVSS 6.1) allows unauthenticated attackers to inject arbitrary web scripts into a user's browser by manipulating the $_SERVER['PHP_SELF'] variable. While the potential impact includes information disclosure and defacement, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.5.9CPE matchmatch criteria
cpe:2.3:a:wp_fountain_project:wp_fountain:*:*:*:*:*: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
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0088 is in the 66th percentile among its peer group of 26,220 CVEs.

Social Chatter

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

plugins.trac.wordpress.org / browser/wp-fountain/trunk/wp-fountain.php
ExploitThird Party Advisory
wordfence.com / vulnerability-advisories
ExploitThird Party Advisory