CVE-2023-1149Public exploitNetwork attack vector

Stored HTML injection via raw payment metadata rendering

Published Mar 2, 2023 · Updated Mar 7, 2025

Stored HTML injection in BTCPay Server before 1.8.0 allows remote authenticated users to render crafted markup in another user's browser. Razor views pass payment request, posData, receiptData, and related payment values through Safe.Raw instead of contextual encoding. Reachability requires an authenticated user to store crafted payment metadata and another user to open an affected view.

CVSS severity5.4
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored HTML injection in BTCPay Server before 1.8.0 allows remote authenticated users to render crafted markup in another user's browser. Razor views pass payment request, posData, receiptData, and related payment values through Safe.Raw instead of contextual encoding. Reachability requires an authenticated user to store crafted payment metadata and another user to open an affected view.

The record

CVE
CVE-2023-1149
Published
Mar 2, 2023
Updated
Mar 7, 2025
Vendor
BTCPay Server
Product
BTCPay Server
Classifications
CWE-76, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <1.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BTCPay Server · BTCPay Serverversion=unspecified <1.8.0

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
5.7huntr.devCVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-76Improper Neutralization of Equivalent Special Elements
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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