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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTYyZ3ItNHFwOS1oOThm

Regular Expression Denial of Service in Handlebars

Handlebars before 4.4.5 allows Regular Expression Denial of Service (ReDoS) because of eager matching. The parser may be forced into an endless loop while processing crafted templates. This may allow attackers to exhaust system resources.

Permalink: https://github.com/advisories/GHSA-62gr-4qp9-h98f
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTYyZ3ItNHFwOS1oOThm
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: 5 months ago


CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-62gr-4qp9-h98f, CVE-2019-20922
References: Repository: https://github.com/handlebars-lang/handlebars.js
Blast Radius: 45.8

Affected Packages

npm:handlebars
Dependent packages: 15,556
Dependent repositories: 1,258,975
Downloads: 65,805,502 last month
Affected Version Ranges: >= 4.0.0, < 4.4.5
Fixed in: 4.4.5
All affected versions: 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.0.10, 4.0.11, 4.0.12, 4.0.13, 4.0.14, 4.1.0, 4.1.1, 4.1.2, 4.2.0, 4.2.1, 4.2.2, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4
All unaffected versions: 1.0.6, 1.0.7, 1.0.8, 1.0.9, 1.0.10, 1.0.11, 1.0.12, 1.1.0, 1.1.1, 1.1.2, 1.2.0, 1.2.1, 1.3.0, 2.0.0, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 4.4.5, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.6.0, 4.7.0, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8