CVE-2023-50475: An issue was discovered in bcoin-org bcoin version 2.2.0, allows remote attackers to obtain sensitive informat

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2023-50475 is a critical-severity flaw (CVSS 9.1) affecting bcoin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in bcoin-org bcoin version 2.2.0, allows remote attackers to obtain sensitive information via weak hashing algorithms in the component \vendor\faye-websocket.js.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-327
Published	2023-12-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: bcoin

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-21 11:15 UTCPublished CVE record published
2026-06-17 06:39 UTCUpdated Record last modified

bcoin bcoin DOWNGRADE

Affected: 2.2.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.2.0

1. Check installed version

apt-cache policy bcoin || rpm -q bcoin || bcoin --version

2. No fixed release: DOWNGRADE to a release before 2.2.0 (Debian / Ubuntu)

apt-cache madison bcoin sudo apt install bcoin=<VERSION_BEFORE_2.2.0> sudo apt-mark hold bcoin

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list bcoin sudo dnf downgrade bcoin-<VERSION_BEFORE_2.2.0> sudo dnf versionlock add bcoin

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-50475?

bcoin: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-50475 being exploited?

CVE-2023-50475 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-50475 affect?

CVE-2023-50475 affects bcoin. Severity is critical (CVSS 9.1). An issue was discovered in bcoin-org bcoin version 2.2.0, allows remote attackers to obtain sensitive information via weak hashing algorithms in the component \vendor\faye-websocket.js.

How urgent is CVE-2023-50475?

Priority 53/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-17145 HIGH 7.5 UPGRADE UPGRADE Bitcoin Core 0.16.x before 0.16.2 and Bitcoin Knots 0.16.x before 0.16.2 allow remote denial of service via a

References

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