CVE-2021-29250

5.4 mediumEPSS 0.5%

Medium (5.4) in btcpayserver btcpay server. EPSS 0.5% chance of exploitation in the next 30 days.

BTCPay Server through 1.0.7.0 suffers from a Stored Cross Site Scripting (XSS) vulnerability within the POS Add Products functionality. This enables cookie stealing.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-05-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

btcpayserver:btcpay_server

References

https://blog.btcpayserver.org/vulnerability-disclosure-v1-0-7-0/
https://github.com/btcpayserver/btcpayserver/releases
https://blog.btcpayserver.org/vulnerability-disclosure-v1-0-7-0/
https://github.com/btcpayserver/btcpayserver/releases

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