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Vulnerability details: VCID-znj9-9zem-s3c9
Vulnerability ID VCID-znj9-9zem-s3c9
Aliases GMS-2020-1
Summary Regular Expression Denial of Service A regex in the form of `/[x-\ud800]/u` causes the parser to enter an infinite loop. The string is not valid UTF16 which usually results in it being sanitized before reaching the parser.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk None
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
There are no known severity scores.
Reference id Reference type URL
https://github.com/acornjs/acorn/commit/793c0e569ed1158672e3a40aeed1d8518832b802
https://snyk.io/vuln/SNYK-JS-ACORN-559469
https://www.npmjs.com/advisories/1488
No exploits are available.
There are no known vectors.

No EPSS data available for this vulnerability.

Date Actor Action Source VulnerableCode Version
2026-04-02T12:36:28.586857+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/acorn/GMS-2020-1.yml 38.0.0