CVE-2020-1912
Last modified
CVE-2020-1912 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. An out-of-bounds read/write vulnerability when executing lazily compiled inner generator functions in Facebook Hermes prior to commit 091835377369c8fd5917d9b87acffa721ad2a168 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. EPSS estimates a 1.81% chance of exploitation in the next 30 days.
Description
An out-of-bounds read/write vulnerability when executing lazily compiled inner generator functions in Facebook Hermes prior to commit 091835377369c8fd5917d9b87acffa721ad2a168 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.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hermes | <= 0.4.3 |
References
- https://github.com/facebook/hermes/commit/091835377369c8fd5917d9b87acffa721ad2a168Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1912Vendor Advisory
- https://github.com/facebook/hermes/commit/091835377369c8fd5917d9b87acffa721ad2a168Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1912Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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