CVE-2020-35898

Name: CVE-2020-35898
Creator: NVD / NIST
Published: 2020-12-31T09:15:14.647+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 1.41%

Last modified Jun 17, 2026

CVE-2020-35898 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.. EPSS estimates a 1.41% chance of exploitation in the next 30 days.

Description

An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS Probability

1.41%

69.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Actix	Actix-Utils	< 2.0.0

References

https://rustsec.org/advisories/RUSTSEC-2020-0045.htmlExploit, Patch, Third Party Advisory
https://rustsec.org/advisories/RUSTSEC-2020-0045.htmlExploit, Patch, Third Party Advisory

Timeline

Published: Dec 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35898?

An issue was discovered in the actix-utils crate before 2.0.0 for Rust. The Cell implementation allows obtaining more than one mutable reference to the same data.

How severe is CVE-2020-35898?

CVE-2020-35898 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 1.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35898?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35898?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST