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Fencer Vulns
medium 4.8

CVE-2020-13423 json

Form Builder 2.1.0 for Magento has multiple XSS issues that can be exploited against Magento 2 admin accounts via the Current_url or email…

published 2020-06-29 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-5677

cvss
4.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

Form Builder 2.1.0 for Magento has multiple XSS issues that can be exploited against Magento 2 admin accounts via the Current_url or email field, or the User-Agent HTTP header.

Exploit prediction

1.36% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • anothernetsecblog.com https://anothernetsecblog.com/magento-2-extension-security/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 4.8 CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.