CVE-2021-4073 is a critical authentication bypass vulnerability affecting the RegistrationMagic WordPress plugin versions 5.0.1.7 and earlier. It allows unauthenticated attackers to log in as any site user, including administrators, by exploiting missing identity validation in the social login function if a valid username is known. 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. Although not on CISA's KEV, public exploit code (Nuclei templates) is available, and it has a high EPSS score and significant community discussion, indicating a high likelihood of exploitation.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.0.1.7CPE matchmatch criteria | cpe:2.3:a:metagauss:registrationmagic:*:*:*:*:*:wordpress:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub 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 records are not available for this CVE.