CVE-2020-7637
MEDIUMclass-transformer < 0.3.1 - Prototype Pollution via classToPlainFromExist
Title source: llmDescription
class-transformer before 0.3.1 allow attackers to perform Prototype Pollution. The classToPlainFromExist function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.
References (2)
Core 2
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/typestack/class-transformer/commit/8f04eb9db02de708f1a20f6f2d2bb309b2fed01e
Exploit, Third Party Advisory x_refsource_misc
https://snyk.io/vuln/SNYK-JS-CLASSTRANSFORMER-564431
Scores
CVSS v3
5.3
EPSS
0.0116
EPSS Percentile
62.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Details
CWE
CWE-1321
Status
published
Products (2)
class-transformer_project/class-transformer
< 0.3.1
npm/class-transformer
0 - 0.3.1npm
Published
Apr 06, 2020
Tracked Since
Feb 18, 2026