WP Fusion Lite <= 3.37.18 Reflected Cross-Site Scripting

published 2021-08-09 5y ago modified 2026-06-17 4mo ago also EUVD-2021-21310

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 57%
public exploits: 0; none known

The WP Fusion Lite WordPress plugin is vulnerable to Reflected Cross-Site Scripting via the startdate parameter found in the ~/includes/admin/logging/class-log-table-list.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 3.37.18.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-05-23)

Exploit prediction

0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

Very Good Plugins WP Fusion Lite

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

Technology feeds

WordPress rss critical rss

References

wordfence.com /vulnerability-advisories/#CVE-2021-34660
third-party-advisory
plugins.trac.wordpress.org /browser/wp-fusion-lite/trunk/includes/admin/logging/class-log-table-list.php?rev=2497097#L427
third-party-advisory

Sources

CVE List CVE-2021-34660
NVD CVE-2021-34660

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