Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZncDMtaDNqai1wcng0

Prototype pollution in class-transformer

class-transformer through 0.2.3 is vulnerable to Prototype Pollution. The 'classToPlainFromExist' function could be tricked into adding or modifying properties of 'Object.prototype' using a 'proto' payload.

Permalink: https://github.com/advisories/GHSA-6gp3-h3jj-prx4
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTZncDMtaDNqai1wcng0
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 4 years ago
Updated: over 1 year ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Identifiers: GHSA-6gp3-h3jj-prx4, CVE-2020-7637
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-7637
• https://github.com/typestack/class-transformer/blob/a650d9f490573443f62508bc063b857bcd5e2525/src/ClassTransformer.ts#L29-L31,
• https://snyk.io/vuln/SNYK-JS-CLASSTRANSFORMER-564431
• https://github.com/typestack/class-transformer/commit/8f04eb9db02de708f1a20f6f2d2bb309b2fed01e
• https://github.com/advisories/GHSA-6gp3-h3jj-prx4

Repository: https://github.com/typestack/class-transformer
Blast Radius: 25.0

Affected Packages