XSS in Authorize.net Payment Terminal
CVE-2021-47885
Multiple payment terminal versions contain non-persistent cross-site scripting vulnerabilities in billing and payment information input fields. Attackers can inject malicious script code through vulnerable parameters to manipulate client-side requests and potentially execute session hijacking or phishing attacks.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (16.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Authorize.net Payment Terminal — versions 2.4.1
- Criticalgears Paypal Pro Payment Terminal — versions 3.1
- Criticalgears Stripe Payment Terminal — versions 2.2.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2021-47885?
- CVE-2021-47885 is a medium-severity vulnerability in Authorize.net Payment Terminal, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-02-01.
- How severe is CVE-2021-47885?
- Medium severity. CVSS v3 base score is 6.4 out of 10.