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CVE-2023-2437

38
FAUCET Score

CVE-2023-2437 is an authentication bypass vulnerability affecting the UserPro plugin for WordPress, versions up to and including 5.1.1. It allows unauthenticated attackers to log in as any existing user, including administrators, by exploiting insufficient verification during Facebook logins if the attacker knows the user's email address. This vulnerability carries a CVSS score of 8.1 (HIGH) due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. While not currently on the KEV catalog, a Nuclei template exists for detection, and its FAUCET Risk Score is 99/100, indicating a high potential for exploitation, despite limited public discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.1.1CPE matchmatch criteria
cpe:2.3:a:userproplugin:userpro:*:*:*:*:*: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
6.80%
Probability of exploitation in next 30 days
EPSS Percentile
93.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Nuclei: CVE-2023-2437 · Oct 1, 2025
This CVE's current EPSS score of 0.0680 is in the 69th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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

packetstormsecurity.com / files/175871/WordPress-UserPro-5.1.x-Password-Reset-Authentication-Bypass-Escalation.html
ExploitThird Party AdvisoryVDB Entry
codecanyon.net / item/userpro-user-profiles-with-social-login/5958681
Product
wordfence.com / threat-intel/vulnerabilities/id/b3cf9f38-c20e-40dc-a7a1-65b0c6ba7925
Third Party Advisory