What’s Vulnerable › Vulnerabilities

CVE-2020-35899

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-31 · updated 2026-06-17
• Weakness: CWE-416

Description

An issue was discovered in the actix-service crate before 1.0.6 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.

Affected products

• Actix-Service: before 1.0.6 — fixed in 1.0.6

How to fix

Upgrade to a fixed version: Actix-Service 1.0.6. Check the vendor advisory for mitigations.

References

• https://rustsec.org/advisories/RUSTSEC-2020-0046.html
• https://rustsec.org/advisories/RUSTSEC-2020-0046.html

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