What is CVE-2023-0747?

CVE-2023-0747 is a medium-severity vulnerability in Btcpayserver, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2023-02-08.

How severe is CVE-2023-0747?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2023-0747 known to be exploited?

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

XSS in Btcpayserver

CVE-2023-0747

Cross-site Scripting (XSS) - Stored in GitHub repository btcpayserver/btcpayserver prior to 1.7.6.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-02-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.005 (38.8th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Btcpayserver
Btcpayserver Btcpayserver/btcpayserver — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ctflearner/ctflearner

References

huntr.dev/bounties/7830b9b4-af2e-44ef-8b00-ee2491d4e7ff (Exploit, Third Party Advisory)
github.com/btcpayserver/btcpayserver/pull/4567/commits/d4e464ad4ef0cbbf61751e70… (Patch)

Frequently asked questions

What is CVE-2023-0747?: CVE-2023-0747 is a medium-severity vulnerability in Btcpayserver, classified under Cross-site Scripting. CVSS score: 5.5/10. Published 2023-02-08.
How severe is CVE-2023-0747?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2023-0747 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.