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CVE-2021-4337

26
FAUCET Score

CVE-2021-4337 is an authorization bypass vulnerability affecting sixteen XforWooCommerce Add-On Plugins for WordPress, stemming from a missing capability check in the wp_ajax_svx_ajax_factory function. This flaw allows authenticated attackers with subscriber-level permissions or higher to read, edit, or delete WordPress and plugin settings, and to list all users. Rated 8.8 HIGH (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H), it presents a significant risk due to its network-based attack vector, low complexity, and high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.0CPE matchmatch criteria
cpe:2.3:a:xforwoocommerce:add_product_tabs:*:*:*:*:*:wordpress:*:*
< 1.6.0CPE matchmatch criteria
cpe:2.3:a:xforwoocommerce:autopilot_seo:*:*:*:*:*:wordpress:*:*
< 1.3.0CPE matchmatch criteria
cpe:2.3:a:xforwoocommerce:bulk_add_to_cart:*:*:*:*:*:wordpress:*:*
< 1.5.0CPE matchmatch criteria
cpe:2.3:a:xforwoocommerce:comment_and_review_spam_control:*:*:*:*:*:wordpress:*:*
< 1.3.0CPE matchmatch criteria
cpe:2.3:a:xforwoocommerce:floating_cart:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 64th percentile among its peer group of 17,823 CVEs.

Social Chatter

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

Remediation

Remediation records are not available for this CVE.

References

blog.nintechnet.com / 16-woocommerce-product-add-ons-plugins-fixed-vulnerabilities
ExploitThird Party Advisory
wordfence.com / threat-intel/vulnerabilities/id/05481984-7c18-4ec7-8d7c-831809c3e86b
Third Party Advisory
xforwoocommerce.com / blog/change-log/xforwoocommerce-1-7-0
Vendor Advisory