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CVE-2023-0493

41
FAUCET Score

CVE-2023-0493 is a high-severity HTML injection vulnerability affecting BTCPay Server versions prior to 1.7.5, specifically due to improper neutralization of equivalent special elements. With a CVSS score of 8.8, this vulnerability allows an authenticated attacker to achieve high impact on confidentiality, integrity, and availability with low attack complexity over the network. While not currently on the KEV catalog, an exploit (EDB-51254) is publicly available on ExploitDB. Despite the public exploit, there is minimal community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.7.5CPE matchmatch criteria
cpe:2.3:a:btcpayserver:btcpay_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.90%
Probability of exploitation in next 30 days
EPSS Percentile
94.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-51254 · Apr 5, 2023
This CVE's current EPSS score of 0.0790 is in the 93rd percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
nugetpatch availablevia ghsa
Product: BTCPayServer.ClientFixed in: 1.7.5

Vendor Advisories (1)

nugetGHSA-33gv-rvgq-gpxphigh

Withdrawn Advisory: HTML injections in BTCPayServer

Jan 27, 2023

References

packetstormsecurity.com / files/171732/BTCPay-Server-1.7.4-HTML-Injection.html
Third Party AdvisoryVDB Entry
github.com / btcpayserver/btcpayserver/pull/4545/commits/02070d65836cd24627929b3403efbae8de56039a
Patch
huntr.dev / bounties/3a73b45c-6f3e-4536-a327-cdfdbc59896f
ExploitPatchThird Party Advisory