How severe is CVE-2021-24406?

CVE-2021-24406 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-24406 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-24406?

CVE-2021-24406 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-24406?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-24406 published?

CVE-2021-24406 was published on 2021-07-06 and last updated on 2026-06-17.

CVE-2021-24406

CVE-2021-24406 is a medium-severity vulnerability in Gvectors Wpforo Forum with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Gvectors Wpforo Forum
Published: 2021-07-06
Last modified: 2026-06-17

Description

The wpForo Forum WordPress plugin before 1.9.7 did not validate the redirect_to parameter in the login form of the forum, leading to an open redirect issue after a successful login. Such issue could allow an attacker to induce a user to use a login URL redirecting to a website under their control and being a replica of the legitimate one, asking them to re-enter their credentials (which will then in the attacker hands)

Frequently asked questions

What is CVE-2021-24406?: The wpForo Forum WordPress plugin before 1.9.7 did not validate the redirect_to parameter in the login form of the forum, leading to an open redirect issue after a successful login. Such issue could allow an attacker to induce a user to use a login URL redirecting to a website under their control and being a replica of the legitimate one, asking them to re-enter their credentials (which will then in the attacker hands)
How severe is CVE-2021-24406?: CVE-2021-24406 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-24406 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24406?: CVE-2021-24406 affects Gvectors Wpforo Forum. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24406?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-24406 published?: CVE-2021-24406 was published on 2021-07-06 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/a9284931-555b-4c96-86a3-09e1040b0388

Affected products (1)

cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*

More vulnerabilities in Gvectors Wpforo Forum

CVE-2024-3200 — Critical (CVSS 9.9): The wpForo Forum plugin for WordPress is vulnerable to SQL Injection via the 'slug' attribute of the 'wpforo' shortcode…
CVE-2022-40200 — Critical (CVSS 9.9): Auth. (subscriber+) Arbitrary File Upload vulnerability in wpForo Forum plugin <= 2.0.9 on WordPress.
CVE-2018-16613 — Critical (CVSS 9.8): An issue was discovered in the update function in the wpForo Forum plugin before 1.5.2 for WordPress. A registered…
CVE-2023-2249 — High (CVSS 8.8): The wpForo Forum plugin for WordPress is vulnerable to Local File Include, Server-Side Request Forgery, and PHAR…
CVE-2022-38144 — High (CVSS 8.8): Cross-Site Request Forgery (CSRF) vulnerability in gVectors Team wpForo Forum plugin <= 2.0.5 at WordPress.
CVE-2026-28562 — High (CVSS 8.2): wpForo 2.4.14 contains an unauthenticated SQL injection vulnerability in Topics::get_topics() where the ORDER BY clause…

All CVEs affecting Gvectors Wpforo Forum →

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

Browse all CWE-601 (Open Redirect) vulnerabilities →