What’s Vulnerable › Vulnerabilities

CVE-2019-16141

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-09-09 · updated 2026-06-17
• Weakness: CWE-20

Description

An issue was discovered in the once_cell crate before 1.0.1 for Rust. There is a panic during initialization of Lazy.

Affected products

• Once Cell Project Once Cell: from 0.2.6 before 1.0.1 — fixed in 1.0.1

How to fix

Upgrade to a fixed version: Once Cell Project Once Cell 1.0.1. Check the vendor advisory for mitigations.

References

• https://github.com/matklad/once_cell/issues/46
• https://rustsec.org/advisories/RUSTSEC-2019-0017.html
• https://github.com/matklad/once_cell/issues/46
• https://rustsec.org/advisories/RUSTSEC-2019-0017.html

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