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CVE-2020-22840

31
FAUCET Score

CVE-2020-22840 describes an open redirect vulnerability in b2evolution CMS versions prior to 6.11.6, specifically within the email_passthrough.php script. An attacker can exploit this by manipulating the 'redirect_to' parameter to force users to an arbitrary, attacker-controlled website. This vulnerability carries a CVSS score of 6.1 (Medium), indicating it can be exploited remotely with low complexity, requiring user interaction, and potentially leading to information disclosure or phishing attacks. While there is no evidence of active exploitation or Metasploit modules, Nuclei templates exist, and the vulnerability has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.11.6CPE matchmatch criteria
cpe:2.3:a:b2evolution:b2evolution:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
13.82%
Probability of exploitation in next 30 days
EPSS Percentile
96.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2020-22840 · Feb 23, 2021
This CVE's current EPSS score of 0.1382 is in the 98th percentile among its peer group of 26,219 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Remediation records are not available for this CVE.

References

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