CVE-2020-22840

Name: CVE-2020-22840
Creator: NVD / NIST
Published: 2021-02-09T14:15:14.903+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 13.88%

Last modified Jun 17, 2026

CVE-2020-22840 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 13.88% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

13.88%

96.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
B2evolution	B2evolution	< 6.11.6

References

http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/b2evolution/b2evolution/issues/102Third Party Advisory
https://www.exploit-db.com/exploits/49554Exploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.htmlExploit, Third Party Advisory, VDB Entry
https://github.com/b2evolution/b2evolution/issues/102Third Party Advisory
https://www.exploit-db.com/exploits/49554Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Feb 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-22840?

How severe is CVE-2020-22840?

CVE-2020-22840 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 13.88% probability of exploitation in the next 30 days.

How do I fix CVE-2020-22840?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-22840?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST