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Package details: pkg:pypi/websockets@4.0.1
purl pkg:pypi/websockets@4.0.1
Next non-vulnerable version None.
Latest non-vulnerable version None.
Risk
Vulnerabilities affecting this package (2)
Vulnerability Summary Fixed by
VCID-66rg-p1q7-hken
Aliases:
CVE-2021-33880
GHSA-8ch4-58qp-g3mp
PYSEC-2021-95
private key recovery
9.1
Affected by 0 other vulnerabilities.
VCID-jgps-sj55-xyfj
Aliases:
CVE-2018-1000518
GHSA-6g87-ff9q-v847
PYSEC-2018-79
aaugustin websockets version 4 contains a CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in Servers and clients, unless configured with compression=None that can result in Denial of Service by memory exhaustion. This attack appear to be exploitable via Sending a specially crafted frame on an established connection. This vulnerability appears to have been fixed in 5.
5.0
Affected by 1 other vulnerability.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-06-02T04:14:03.975273+00:00 Pypa Importer Affected by VCID-66rg-p1q7-hken https://github.com/pypa/advisory-database/blob/main/vulns/websockets/PYSEC-2021-95.yaml 38.6.0
2026-06-02T04:05:09.865167+00:00 Pypa Importer Affected by VCID-jgps-sj55-xyfj https://github.com/pypa/advisory-database/blob/main/vulns/websockets/PYSEC-2018-79.yaml 38.6.0