What’s Vulnerable › Vulnerabilities

CVE-2021-24288: AcyMailing < 7.5.0 - Unauthenticated Open Redirect

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-17 · updated 2026-06-17
• Weakness: CWE-601

Description

When subscribing using AcyMailing, the 'redirect' parameter isn't properly sanitized. Turning the request from POST to GET, an attacker can craft a link containing a potentially malicious landing page and send it to the victim.

Affected products

• acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress: before 7.5.0 — fixed in 7.5.0

How to fix

Upgrade to a fixed version: acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress 7.5.0. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/56628862-1687-4862-9ed4-145d8dfbca97
• https://wpscan.com/vulnerability/56628862-1687-4862-9ed4-145d8dfbca97

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