What’s Vulnerable › Vulnerabilities

CVE-2021-26194

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-10 · updated 2026-06-17
• Weakness: CWE-416

Description

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

Affected products

• JerryScript: 2.4.0

References

• https://github.com/jerryscript-project/jerryscript/issues/4445
• https://github.com/jerryscript-project/jerryscript/issues/4445

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