CVE-2020-22840

MEDIUM NUCLEI

b2evolution CMS <6.11.6 - Open Redirect

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-22840. PoCs published by Nakul Ratti. A Nuclei detection template is also available.

AI-analyzed exploit summary This is a writeup describing an open redirect vulnerability in b2evolution 6.11.6. The exploit involves crafting a URL with a malicious 'redirect_to' parameter to redirect users to an attacker-controlled domain.

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.

Exploits (1)

exploitdb WRITEUP
by Nakul Ratti · textwebappsphp
https://www.exploit-db.com/exploits/49554

This is a writeup describing an open redirect vulnerability in b2evolution 6.11.6. The exploit involves crafting a URL with a malicious 'redirect_to' parameter to redirect users to an attacker-controlled domain.

Classification
Writeup 90%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: b2evolution 6.11.6
No auth needed
Prerequisites: access to the target application · ability to craft a malicious URL
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

b2evolution CMS <6.11.6 - Open Redirect
MEDIUMby geeknik

References (3)

Core 3
Core References
Third Party Advisory x_refsource_misc
https://github.com/b2evolution/b2evolution/issues/102
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49554

Scores

CVSS v3 6.1
EPSS 0.1388
EPSS Percentile 96.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-601
Status published
Products (1)
b2evolution/b2evolution < 6.11.6
Published Feb 09, 2021
Tracked Since Feb 18, 2026