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Vulnerability record · CVE-2020-22840 · published 9 February 2021

CVE-2020-22840: B2evolution open redirect vulnerability

B2evolution · B2evolution

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.

6.1 CVSS 3.1 Medium EPSS 14% · top 3.6% CWE-601 · Open redirect
6.1CVSS 3.1 base score, v2 5.8
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 4 tagged exploit
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html ExploitThird Party AdvisoryVDB Entry
https://github.com/b2evolution/b2evolution/issues/102 Third Party Advisory
https://www.exploit-db.com/exploits/49554 ExploitThird Party AdvisoryVDB Entry
http://packetstormsecurity.com/files/161362/b2evolution-CMS-6.11.6-Open-Redirection.html ExploitThird Party AdvisoryVDB Entry
https://github.com/b2evolution/b2evolution/issues/102 Third Party Advisory
https://www.exploit-db.com/exploits/49554 ExploitThird Party AdvisoryVDB Entry

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2016-8901B2evolution injection vulnerabilityb2evolution 6.7.6 suffer from an Object Injection vulnerability in /htsrv/call_plugin.php.EPSS 2.4%9.8CVE-2017-1000423B2evolution improper input validation vulnerabilityb2evolution version 6.6.0 - 6.8.10 is vulnerable to input validation (backslash and single quote escape) in basic install functionality resulting in …EPSS 2.4%9.1CVE-2022-30935B2evolution vulnerabilityAn authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a ba…EPSS 1.4%9.1CVE-2017-5539B2evolution path traversal vulnerabilityThe patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass …EPSS 4.2%8.8CVE-2021-28242B2evolution sql injection vulnerabilitySQL Injection in the "evoadm.php" component of b2evolution v7.2.2-stable allows remote attackers to obtain sensitive database information by injectin…EPSS 5.0%8.1CVE-2017-5480B2evolution path traversal vulnerabilityDirectory traversal vulnerability in inc/files/files.ctrl.php in b2evolution through 6.8.3 allows remote authenticated users to read or delete arbitr…EPSS 2.5%7.5CVE-2016-9479B2evolution vulnerabilityThe "lost password" functionality in b2evolution before 6.7.9 allows remote attackers to reset arbitrary user passwords via a crafted request.EPSS 1.8%7.5CVE-2007-2681B2evolution vulnerabilityDirectory traversal vulnerability in blogs/index.php in b2evolution 1.6 allows remote attackers to include and execute arbitrary local files via a ..…EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2020-22840), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.