Security Digest · Vulnerability record
CVE-2023-50475: bsock uses weak hashing algorithms
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.
CVSS 9.1 Critical EPSS 0.5% · p45
Should you act?
Critical and remotely reachable
No known exploitation yet, but it is network-reachable without credentials. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5%, percentile 45: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 45% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes
bsock(npm) <= 0.1.11, no fixed version listed. Check your lockfile, including transitive dependencies.
What it is
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.
From the GitHub advisory
An issue was discovered in the bsock component of bcoin-org bcoin that allows remote attackers to obtain sensitive information via weak hashing algorithms in the component \vendor\faye-websocket.js.
Weakness type: CWE-327.
Product: bsock (npm) · Assigned by: mitre · Published: 2023-12-21
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| npm | bsock | <= 0.1.11 | none listed |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| n/a | n/a | see vendor advisory |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable yes, technical impact partial.
- FIRST EPSS (model of 2026-10-21): 0.54% probability of exploitation activity in the next 30 days; percentile 45.
Timeline
- — CVE record published by mitre
- — GitHub-reviewed advisory GHSA-jj93-39pf-7mcf published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-jj93-39pf-7mcf github.com
- CVE.org record CVE-2023-50475 cve.org
- NVD entry CVE-2023-50475 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com
- github.com github.com
- github.com github.com