CVE-2020-1896
Critical
Description
A stack overflow vulnerability in Facebook Hermes 'builtin apply' prior to commit 86543ac47e59c522976b5632b8bf9a2a4583c7d2 (https://github.com/facebook/hermes/commit/86543ac47e59c522976b5632b8bf9a2a4583c7d2) 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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Facebook Hermes
PublishedFeb 2, 2021
First seenFeb 2, 2021
Weakness typeCWE-121CWE-121
How to fix
Update
- facebook hermes0.5.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hermes | v < 0.5.0 | 0.5.0 |
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