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CVE-2021-4380

42
FAUCET Score

CVE-2021-4380 is a critical authorization bypass vulnerability affecting the Pinterest Automatic plugin for WordPress, specifically versions up to and including 1.14.3. Unauthenticated attackers can exploit missing capability checks in the 'wp_pinterest_automatic_parse_request' function and 'process_form.php' script to update arbitrary site options. This allows for the creation of new administrative user accounts or redirection of site visitors, posing a severe risk to site integrity. With a CVSS score of 9.8 (Critical) and an EPSS score indicating high exploitability, the potential impact is significant. While not currently in the KEV catalog or having active Metasploit/ExploitDB exploits, Nuclei templates exist, and the lack of community discussion or media coverage is typical for most CVEs.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.14.4CPE matchmatch criteria
cpe:2.3:a:valvepress:pinterest_automatic_pin:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.53%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2021-4380 · Sep 23, 2025
This CVE's current EPSS score of 0.0453 is in the 84th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 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 / critical-vulnerability-fixed-in-wordpress-pinterest-automatic-plugin
ExploitThird Party Advisory
wpscan.com / vulnerability/ffd344fd-de2c-4f27-8932-41aa0a3c3d05
Third Party Advisory
acunetix.com / vulnerabilities/web/wordpress-plugin-pinterest-automatic-pin-security-bypass-4-14-3
Third Party Advisory
wordfence.com / threat-intel/vulnerabilities/id/e4fdc902-4cfe-4116-a294-9a0fcb2de346
Third Party Advisory