CVE-2020-1896
Last modified
CVE-2020-1896 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 2.42% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hermes | < 0.5.0 |
References
- https://github.com/facebook/hermes/commit/86543ac47e59c522976b5632b8bf9a2a4583c7d2Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1896Vendor Advisory
- https://github.com/facebook/hermes/commit/86543ac47e59c522976b5632b8bf9a2a4583c7d2Patch, Third Party Advisory
- https://www.facebook.com/security/advisories/cve-2020-1896Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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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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