What is CVE-2020-36437?

CVE-2020-36437 is a high-severity vulnerability in Conqueue Project, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.1/10. Published 2021-08-08.

How severe is CVE-2020-36437?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Conqueue Project

CVE-2020-36437

An issue was discovered in the conqueue crate before 0.4.0 for Rust. There are unconditional implementations of Send and Sync for QueueSender<T>.

Vulnerability class: Race Condition

Published 2021-08-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Conqueue Project

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

rustsec.org/advisories/RUSTSEC-2020-0117.html (Third Party Advisory)
raw.githubusercontent.com/rustsec/advisory-db/main/crates/conqueue/RUSTSEC-2020… (Third Party Advisory)

Frequently asked questions

What is CVE-2020-36437?: CVE-2020-36437 is a high-severity vulnerability in Conqueue Project, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 8.1/10. Published 2021-08-08.
How severe is CVE-2020-36437?: High severity. CVSS v3 base score is 8.1 out of 10.