Is CVE-2020-22840 in the CISA KEV catalog?

No. CVE-2020-22840 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-22840?

CVE-2020-22840 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2020-22840?

CVE-2020-22840 has an EPSS score of 13.82% (96th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-22840?

Upgrade b2evolution to 6.11.6 or later.

CVE & CISA-KEV Catalog

CVE-2020-22840

MEDIUMEPSS 96th pctl

6.1

CVSS v3

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.

CWE-601Open Redirect

How to fix

Remediation Available

b2evolutionNVD

Affected:< 6.11.6Fixed in:6.11.6CVE-2020-22840derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

13.82%probability of exploitation in 30 days

96thpercentile

Very high risk: more likely to be exploited than 96% of all known CVEs.

References

Exploit2

Third-Party Advisory1

github.com

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.