What is CVE-2023-0748?

CVE-2023-0748 is a medium-severity vulnerability in Btcpayserver, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.4/10. Published 2023-02-08.

How severe is CVE-2023-0748?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Is CVE-2023-0748 known to be exploited?

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

Open Redirect in Btcpayserver

CVE-2023-0748

Open Redirect in GitHub repository btcpayserver/btcpayserver prior to 1.7.6.

Vulnerability class: Open Redirect

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

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Btcpayserver
Btcpayserver Btcpayserver/btcpayserver — versions unspecified

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

References

huntr.dev/bounties/1a0403b6-9ec9-4587-b559-b1afba798c86 (Exploit, Third Party Advisory)
github.com/btcpayserver/btcpayserver/pull/4575/commits/c2cfa17e9619046b43987627… (Patch)

Frequently asked questions

What is CVE-2023-0748?: CVE-2023-0748 is a medium-severity vulnerability in Btcpayserver, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.4/10. Published 2023-02-08.
How severe is CVE-2023-0748?: Medium severity. CVSS v3 base score is 6.4 out of 10.
Is CVE-2023-0748 known to be exploited?: 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.