Conditional CAPTCHA <= 4.0.0 - Unauthenticated Open Redirect

2026-01-31 00:00

Bob Matyas

Strategic Overview

Status

Unpatched

Affected PluginConditional CAPTCHA

Affected Version<= 4.0.0

CVSS5.3Medium

CVECVE-2026-1369

View all Conditional CAPTCHA vulnerabilities

Vulnerability Overview

The Conditional CAPTCHA plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 4.0.0. This is due to insufficient validation on the redirect url supplied via a parameter. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.

Technical Analysis

REMEDIATION: No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement. --- IDENTIFIER: CWE-601 (URL Redirection to Untrusted Site ('Open Redirect')) The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

External References

https://www.cve.org/CVERecord?id=CVE-2026-1369 https://www.wordfence.com/threat-intel/vulnerabilities/id/f093f44e-972c-407a-ab6b-4dd8acda5b95

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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