What is CVE-2021-3830?

CVE-2021-3830 is a medium-severity vulnerability in Btcpayserver Btcpay_server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-26.

How severe is CVE-2021-3830?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-3830 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Btcpayserver Btcpay_server

CVE-2021-3830

btcpayserver is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (42.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Btcpayserver Btcpay_server
Btcpayserver Btcpayserver/btcpayserver — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

b1nslashsh/CVE

References

security@huntr.dev (Patch, Third Party Advisory, x_refsource_MISC)
security@huntr.dev (x_refsource_CONFIRM, Exploit, Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-3830?: CVE-2021-3830 is a medium-severity vulnerability in Btcpayserver Btcpay_server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-09-26.
How severe is CVE-2021-3830?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-3830 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.