What’s Vulnerable › Vulnerabilities

CVE-2020-22840

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 13.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-02-09 · updated 2026-06-17
• Weakness: CWE-601

Description

Open redirect vulnerability in b2evolution CMS version prior to 6.11.6 allows an attacker to perform malicious open redirects to an attacker controlled resource via redirect_to parameter in email_passthrough.php.

Affected products

• b2evolution: before 6.11.6 — fixed in 6.11.6

How to fix

Upgrade to a fixed version: b2evolution 6.11.6. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html
• https://github.com/b2evolution/b2evolution/issues/102
• https://www.exploit-db.com/exploits/49554
• http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html
• https://github.com/b2evolution/b2evolution/issues/102
• https://www.exploit-db.com/exploits/49554

Get alerted when CVE-2020-22840 or the next vulnerability affects your stack