What’s Vulnerable › Vulnerabilities

CVE-2021-33796

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-07 · updated 2026-06-17
• Weakness: CWE-416

Description

In MuJS before version 1.1.2, a use-after-free flaw in the regexp source property access may cause denial of service.

Affected products

• MuJS: before 1.1.2 — fixed in 1.1.2

How to fix

Upgrade to a fixed version: MuJS 1.1.2. Check the vendor advisory for mitigations.

References

• https://github.com/ccxvii/mujs/commit/7ef066a3bb95bf83e7c5be50d859e62e58fe8515
• https://github.com/ccxvii/mujs/commit/7ef066a3bb95bf83e7c5be50d859e62e58fe8515

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