CVEvulnerability

CVE-2020-1911

9.8 CRITICAL Published 2020-09-04 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-09-04
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-843

Description

A type confusion vulnerability when resolving properties of JavaScript objects with specially-crafted prototype chains in Facebook Hermes prior to commit fe52854cdf6725c2eaa9e125995da76e6ceb27da allows attackers to potentially execute arbitrary code via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Affected configurations

• facebook hermes (< 0.4.3)

Related

Weakness · CWE (1)

  • CWE-843 Access of Resource Using Incompatible Type weakness

References