CVE-2021-24406: wpForo Forum < 1.9.7 - Open Redirect

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-07-06 · updated 2026-06-17
Weakness: CWE-601

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)

Affected products

tomdever wpForo Forum: before 1.9.7 — fixed in 1.9.7

How to fix

Upgrade to a fixed version: tomdever wpForo Forum 1.9.7. Check the vendor advisory for mitigations.

References

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