How severe is CVE-2021-24527?

CVE-2021-24527 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-24527 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24527?

CVE-2021-24527 affects Cozmoslabs Profile Builder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24527?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-24527 published?

CVE-2021-24527 was published on 2021-08-16 and last updated on 2026-06-17.

CVE-2021-24527

CVE-2021-24527 is a critical-severity vulnerability in Cozmoslabs Profile Builder with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Cozmoslabs Profile Builder
Published: 2021-08-16
Last modified: 2026-06-17

Description

The User Registration & User Profile – Profile Builder WordPress plugin before 3.4.9 has a bug allowing any user to reset the password of the admin of the blog, and gain unauthorised access, due to a bypass in the way the reset key is checked. Furthermore, the admin will not be notified of such change by email for example.

Frequently asked questions

What is CVE-2021-24527?: The User Registration & User Profile – Profile Builder WordPress plugin before 3.4.9 has a bug allowing any user to reset the password of the admin of the blog, and gain unauthorised access, due to a bypass in the way the reset key is checked. Furthermore, the admin will not be notified of such change by email for example.
How severe is CVE-2021-24527?: CVE-2021-24527 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24527 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24527?: CVE-2021-24527 affects Cozmoslabs Profile Builder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24527?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-24527 published?: CVE-2021-24527 was published on 2021-08-16 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/c142e738-bc4b-4058-a03e-1be6fca47207

Affected products (1)

cpe:2.3:a:cozmoslabs:profile_builder:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Cozmoslabs Profile Builder

CVE-2024-6695 — Critical (CVSS 9.8): it's possible for an attacker to gain administrative access without having any kind of account on the targeted site and…
CVE-2023-2297 — Critical (CVSS 9.8): The Profile Builder – User Profile & User Registration Forms plugin for WordPress is vulnerable to unauthorized…
CVE-2024-6366 — Critical (CVSS 9.1): The User Profile Builder WordPress plugin before 3.11.8 does not have proper authorisation, allowing unauthenticated…
CVE-2024-22140 — High (CVSS 8.8): Cross-Site Request Forgery (CSRF) vulnerability in Cozmoslabs Profile Builder Pro.This issue affects Profile Builder…
CVE-2024-0324 — High (CVSS 8.2): The User Profile Builder – Beautiful User Registration Forms, User Profiles & User Role Editor plugin for WordPress…
CVE-2015-9337 — High (CVSS 7.5): The profile-builder plugin before 2.1.4 for WordPress has no access control for activating or deactivating addons via…

All CVEs affecting Cozmoslabs Profile Builder →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-20317 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-19977 — Critical (CVSS 10.0): A vulnerability was detected in EFM ipTIME A3004T 14.19.0. The affected element is the function…
CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825 — Critical (CVSS 10.0): Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-287 (Improper Authentication) vulnerabilities →