CVE-2021-26199: Jerryscript

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in JerryScript 2.4.0. There is a heap-use-after-free in ecma_bytecode_ref in ecma-helpers.c file.

Affected products

• Jerryscript Jerryscript: version 2.4.0 only

Published 2021-06-10. Last modified 2026-06-17.