CVE-2023-50475Network attack vector

Information disclosure via weak WebSocket handshake hashes

Published Dec 21, 2023 · Updated Nov 26, 2024

Weak cryptography in bcoin 2.2.0 allows remote attackers to obtain sensitive information through its bundled WebSocket implementation. The vendored faye-websocket.js computes WebSocket handshakes with SHA-1 in Hybi.generateAccept and MD5 in the older draft handshake signature. Published sources do not identify the sensitive data exposed, a working attack, or the precondition that turns these protocol hash operations into disclosure.

CVSS severity9.1
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak cryptography in bcoin 2.2.0 allows remote attackers to obtain sensitive information through its bundled WebSocket implementation. The vendored faye-websocket.js computes WebSocket handshakes with SHA-1 in Hybi.generateAccept and MD5 in the older draft handshake signature. Published sources do not identify the sensitive data exposed, a working attack, or the precondition that turns these protocol hash operations into disclosure.

The record

CVE
CVE-2023-50475
Published
Dec 21, 2023
Updated
Nov 26, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-327
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 21, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

No public exploit references are available in this record.

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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