What is CVE-2023-1149?

CVE-2023-1149 is a medium-severity vulnerability in Btcpayserver Btcpay Server, classified under CWE-76. CVSS score: 5.4/10. Published 2023-03-02.

How severe is CVE-2023-1149?

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

Vulnerability in Btcpayserver Btcpay Server

CVE-2023-1149

Improper Neutralization of Equivalent Special Elements in GitHub repository btcpayserver/btcpayserver prior to 1.8.0.

Published 2023-03-02 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.005 (44.8th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% 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 Btcpay Server
Btcpayserver Btcpayserver/btcpayserver — versions unspecified

Weakness classification (CWE)

CWE-76

References

huntr.dev/bounties/2e734209-d7b0-4f57-a8be-c65c82208f2f (Exploit, Third Party Advisory)
github.com/btcpayserver/btcpayserver/commit/ddb125f45892b4dafdbd5c072af1ce62375… (Patch)

Frequently asked questions

What is CVE-2023-1149?: CVE-2023-1149 is a medium-severity vulnerability in Btcpayserver Btcpay Server, classified under CWE-76. CVSS score: 5.4/10. Published 2023-03-02.
How severe is CVE-2023-1149?: Medium severity. CVSS v3 base score is 5.4 out of 10.