What is CVE-2023-0493?

CVE-2023-0493 is a medium-severity vulnerability in Btcpayserver Btcpay Server, classified under CWE-76. CVSS score: 5.3/10. Published 2023-01-26.

How severe is CVE-2023-0493?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Btcpayserver Btcpay Server

CVE-2023-0493

Improper Neutralization of Equivalent Special Elements in GitHub repository btcpayserver/btcpayserver prior to 1.7.5.

Published 2023-01-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.079 (94.7th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.079 · newest: 0.079 · change: 0.000

Affected products

Btcpayserver Btcpay Server
Btcpayserver Btcpayserver/btcpayserver — versions unspecified

Weakness classification (CWE)

References

huntr.dev/bounties/3a73b45c-6f3e-4536-a327-cdfdbc59896f (Exploit, Patch, Third Party Advisory)
github.com/btcpayserver/btcpayserver/pull/4545/commits/02070d65836cd24627929b34… (Patch)
packetstormsecurity.com/files/171732/BTCPay-Server-1.7.4-HTML-Injection.html (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2023-0493?: CVE-2023-0493 is a medium-severity vulnerability in Btcpayserver Btcpay Server, classified under CWE-76. CVSS score: 5.3/10. Published 2023-01-26.
How severe is CVE-2023-0493?: Medium severity. CVSS v3 base score is 5.3 out of 10.