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CVE-2020-22839

21
FAUCET Score

CVE-2020-22839 is a reflected cross-site scripting (XSS) vulnerability found in the evoadm.php file of b2evolution CMS version 6.11.6-stable. This allows remote attackers to inject arbitrary webscript or HTML code through the tab3 parameter. With a CVSS score of 6.1 (MEDIUM), exploitation requires user interaction and can lead to low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.11.6CPE matchmatch criteria
cpe:2.3:a:b2evolution:b2evolution_cms:6.11.6:*:*:*:*:*:*:*

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
4.50%
Probability of exploitation in next 30 days
EPSS Percentile
90.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0450 is in the 96th percentile among its peer group of 26,221 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/161363/b2evolution-CMS-6.11.6-Cross-Site-Scripting.html
ExploitThird Party Advisory
sohambakore.medium.com / b2evolution-cms-reflected-xss-in-tab-type-parameter-in-evoadm-php-38886216cdd3
ExploitThird Party Advisory
exploit-db.com / exploits/49555
ExploitThird Party Advisory