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01 Record

CVE-2020-7662

websocket-extensions npm module prior to 0.1.4 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string

UnratedPUBLISHEDCNA: snyk
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

websocket-extensions npm module prior to 0.1.4 allows Denial of Service (DoS) via Regex Backtracking. The extension parser may take quadratic time when parsing a header containing an unclosed string

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.08% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 87.5% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2020-06-02 18:28Z6 YR AGO
Last updated
2024-08-04 09:33Z2 YR AGO
Reserved
2020-01-21
Assigning CNA
snyk
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
b46b5db1750b98fbfd93f8f8f93b1793698a81f89f6a31bb4c020529d551292c

05 Affected products

VendorProductVersionsPlatforms
n/awebsocket-extensions (npm)All versions prior to 0.1.4—

06 References