CVE-2023-23557

An error in Hermes' algorithm for copying objects properties prior to commit a00d237346894c6067a594983be6634f4168c9ad could be used by a malicious attacker to execute arbitrary code via type confusion. Note that this is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.

• CWE-843
• CWE-843

• https://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9adPatch, Vendor Advisory
• https://www.facebook.com/security/advisories/cve-2023-23557Patch, Vendor Advisory
• https://github.com/facebook/hermes/commit/a00d237346894c6067a594983be6634f4168c9adPatch, Vendor Advisory
• https://www.facebook.com/security/advisories/cve-2023-23557Patch, Vendor Advisory

Published

May 18, 2023

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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