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CVE-2021-4389

17
FAUCET Score

CVE-2021-4389 describes a Cross-Site Request Forgery (CSRF) vulnerability in the WP Travel plugin for WordPress, affecting versions up to and including 4.4.6. This flaw stems from inadequate nonce validation in the save_meta_data() function, allowing unauthenticated attackers to save metadata for travel posts. The vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to low integrity impact. There is no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB. Despite this, the vulnerability has garnered some community discussion and media coverage, though one article incorrectly links it to a Microsoft fix.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.4.7CPE matchmatch criteria
cpe:2.3:a:wensolutions:wp_travel:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 40th percentile among its peer group of 26,221 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

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 / 25-wordpress-plugins-vulnerable-to-csrf-attacks
Not Applicable
blog.nintechnet.com / more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1
ExploitTechnical DescriptionThird Party Advisory
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4
Not Applicable
blog.nintechnet.com / multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5
Not Applicable
plugins.trac.wordpress.org / changeset/2477827/wp-travel/tags/4.4.7/inc/admin/class-admin-metaboxes.php
Patch
wordfence.com / threat-intel/vulnerabilities/id/28dea1e9-e772-488e-b98f-93a46ab84581
Third Party Advisory