# CVE-2020-36436: RUSTSEC-2020-0116 - PinSlab<T> and Unordered<T, S> need bounds on their Send/Sync traits

Source: https://junglewise.ai/threats/cve-2020-36436-data-races-in-unicycle  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-11-15  
License: CC BY 4.0 with a link back

CVE-2020-36436 · Severity: low · CVSS 3.1 · Published 2020-11-15

PinSlab<T> and Unordered<T, S> need bounds on their Send/Sync traits

Technologies: [unicycle (crates.io)](https://junglewise.ai/threats/technologies/unicycle). Vendors: [crates.io](https://junglewise.ai/threats/vendors/crates-io).

## Quick answers

**Is CVE-2020-36436 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-36436 being exploited in the wild.

**How severe is CVE-2020-36436?** Low severity, with a CVSS score of 3.1, published 15 November 2020.

**Which products and versions are affected?** unicycle (crates.io) SEMVER:introduced=0,fixed=0.7.1, SEMVER:introduced=0.0.0-0,fixed=0.7.1.

**Is there a fix for CVE-2020-36436?** Yes. unicycle (crates.io): upgrade to 0.7.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2020-36436?** Check whether you run unicycle (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- unicycle (crates.io): upgrade to 0.7.1 or later

  ```sh
  cargo update -p unicycle
  ```


## Affected products

- unicycle (crates.io) SEMVER:introduced=0,fixed=0.7.1, SEMVER:introduced=0.0.0-0,fixed=0.7.1

## Identifiers

- CVE-2020-36436
- GHSA-686f-ch3r-xwmh
- RUSTSEC-2020-0116

## Related threats

- [unicycle use-after-free in Unordered drop with panicking futures](https://junglewise.ai/threats/rustsec-2026-0298-use-after-free-when-a-future-s-drop-panics-while-the-ec365687)
- [Data races in unicycle](https://junglewise.ai/threats/data-races-in-unicycle-6a2f0d63)