Loading...
Skip to main content
GeekWala

CVE-2020-36435 — Vulnerability in ruspiro-singleton — CVE Details

HIGH

Singleton lacks bounds on Send and Sync.

Published November 16, 2020Updated November 8, 2023Source: osv

Summary

`Singleton<T>` is meant to be a static object that can be initialized lazily. In order to satisfy the requirement that `static` items must implement `Sync`, `Singleton` implemented both `Sync` and `Send` unconditionally. This allows for a bug where non-`Sync` types such as `Cell` can be used in singletons and cause data races in concurrent programs. The flaw was corrected in commit `b0d2bd20e` by adding trait bounds, requiring the contaiend type to implement `Sync`.

Advisory Timeline

  • First published November 16, 2020 (2156 days ago).
  • Last revised November 8, 2023 — 1087 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update ruspiro-singleton to 0.4.1 or later
cargo update -p ruspiro-singleton --precise 0.4.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
ruspiro-singleton
crates.io
All versions0.4.1

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

References

Frequently Asked Questions

What is CVE-2020-36435?
Singleton lacks bounds on Send and Sync. This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.1/10).
How do I check if my project is affected by CVE-2020-36435?
CVE-2020-36435 affects ruspiro-singleton. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2020-36435 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.1

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

RUSTSEC-2020-0115
GHSA-fqq2-xp7m-xvm8

Related CVEs

  • CVE-2026-93657
    HIGH

    hickory-resolver: Resolver::lookup() and Resolver::lookup_ip() APIs obscure DNSSEC validation failures

  • CVE-2026-18140
    HIGH

    aws-smithy-json: Uncontrolled recursion in the aws-smithy-json unknown-key skip path allows unauthenticated remote denial of service in smithy-rs generated servers

More crates.io advisories

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies