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Vulnerabilities / CVE-2020-1914

critical

CVE-2020-1914

Always-Incorrect Control Flow Implementation in Facebook Hermes

Published Modified CWE 670
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA.

Description

A logic vulnerability when handling the SaveGeneratorLong instruction in Facebook Hermes prior to commit b2021df620824627f5a8c96615edbd1eb7fdddfc allows attackers to potentially read out of bounds or theoretically 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 packages and fixed versions

SourcePackageFixed in
npm::GitHub Security Advisory npmhermes-engine0.7.2
alpine 3.13hermes0
alpine 3.14hermes0
alpine 3.15hermes0
alpine 3.16hermes0
alpine 3.17hermes0
alpine 3.18hermes0
alpine 3.19hermes0
alpine 3.20hermes0
alpine 3.21hermes0
alpine 3.22hermes0
alpine 3.23hermes0
Show all 14 entries from 14 sources
SourcePackageFixed in
npm::GitHub Security Advisory npmhermes-engine0.7.2
alpine 3.13hermes0
alpine 3.14hermes0
alpine 3.15hermes0
alpine 3.16hermes0
alpine 3.17hermes0
alpine 3.18hermes0
alpine 3.19hermes0
alpine 3.20hermes0
alpine 3.21hermes0
alpine 3.22hermes0
alpine 3.23hermes0
alpine 3.24hermes0
alpine edgehermes0

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.