Skip to content
Fencer Vulns
medium 5.3

CVE-2023-0493 json

Improper Neutralization of Equivalent Special Elements in btcpayserver/btcpayserver

published 2023-01-26 3 y ago modified 2026-09-10 1 mo ago also GHSA-33gv-rvgq-gpxp , EUVD-2023-0312

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
8.1%
EPSS 8.1% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

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

Patch / fix

  • btcpayserver btcpayserver/btcpayserver 1.7.5

Timeline

  1. Published
  2. First public exploit (EDB-51254)

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

8.12% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-51254 BTCPay Server v1.7.4 - HTML Injection webapps, 2023-04-05
  • huntr.dev https://huntr.dev/bounties/3a73b45c-6f3e-4536-a327-cdfdbc59896f referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • btcpayserver btcpayserver/btcpayserver

Classification

Weakness
  • CWE-76 Improper Neutralization of Equivalent Special Elements
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.