CVE-2021-3646
6.1 MEDIUMbtcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2021-09-10 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 6.1 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CWE
- CWE-79
Affected products
| Vendor | Product |
|---|---|
| btcpayserver | btcpay_server |
Description
btcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-3646
- [Patch]https://github.com/btcpayserver/btcpayserver/commit/fc4e47cec608cc3dba24b19d0145ac69320b975e
- [Exploit reference]https://huntr.dev/bounties/32e30ecf-31fa-45f6-8552-47250ef0e613
- [Patch]https://github.com/btcpayserver/btcpayserver/commit/fc4e47cec608cc3dba24b19d0145ac69320b975e
- [Exploit reference]https://huntr.dev/bounties/32e30ecf-31fa-45f6-8552-47250ef0e613
Related CVEs
Same vendor
- CVE-2021-3830 — btcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (5.4 MEDIUM)
Same CWE
- CVE-2026-12425 — Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in PowerSchool Employee Access ...
- CVE-2024-30476 — PowerStore contains a Stored Cross-Site Scripting Vulnerability in the PowerStore Manager (5.4 MEDIUM)
- CVE-2026-54198 — Unauthenticated Cross Site Scripting (XSS) in Media LIbrary Assistant <= 3.35 versions (7.1 HIGH)
- CVE-2026-54191 — Unauthenticated Cross Site Scripting (XSS) in Pods <= 3.3.8 versions (7.1 HIGH)
- CVE-2026-39437 — Unauthenticated Cross Site Scripting (XSS) in Min Max Step Quantity Limits Manager for WooCommerce <= 5.2.2 versions (7.1 HIGH)