CVE-2020-1913
Signed to Unsigned Conversion Error in Facebook Hermes
8.1
HIGH
CVSS 3.1
EPSS 0.20%
Description
An Integer signedness error in the JavaScript Interpreter in Facebook Hermes prior to commit 2c7af7ec481ceffd0d14ce2d7c045e475fd71dc6 allows attackers to cause a denial of service attack or a potential RCE 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.
How to fix CVE-2020-1913
To remediate CVE-2020-1913, upgrade the affected package to a fixed version below.
- —upgrade to 0.5.2 or later
Is CVE-2020-1913 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.5.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |