CVE-2020-36457
Data races in lever
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T.
- Record
CVE-2020-36457- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-77
- Updated
- 2026-11-02
CVE List No score
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T.
- Record
CVE-2020-36457- Updated
- 2026-11-02
EUVDEUVD-2021-1666 No score
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T.
- Record
EUVD-2021-1666- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-9pp4-8p8v-g78w
Data races in lever
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T. This allows non-Send types such as Rc and non-Sync types such as Cell to be used across thread boundaries which can trigger undefined behavior and memory corruption.
- Record
GHSA-9pp4-8p8v-g78w- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-77, CWE-362
- Updated
- 2026-11-02
OSVGHSA-9pp4-8p8v-g78w
Data races in lever
An issue was discovered in the lever crate before 0.1.1 for Rust. AtomicBox<T> implements the Send and Sync traits for all types T. This allows non-Send types such as Rc and non-Sync types such as Cell to be used across thread boundaries which can trigger undefined behavior and memory corruption.
- Record
GHSA-9pp4-8p8v-g78w- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-362, CWE-77
- Updated
- 2026-11-02
OSVRUSTSEC-2020-0137
AtomicBox<T> lacks bound on its Send and Sync traits allowing data races
AtomicBox<T> is a Box type designed to be used across threads, however, it
implements the Send and Sync traits for all types T.
This allows non-Send types such as Rc and non-Sync types such as Cell to
be used across thread boundaries which can trigger undefined behavior and
memory corruption.
- Record
RUSTSEC-2020-0137- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-36457 is a high vulnerability (CVSS 8.1) in Lever Project Lever, published November 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. Fixed in lever 0.1.1.
References
rustsec.org/advisories/RUSTSEC-2020-0137.html
raw.githubusercontent.com/rustsec/advisory-db/main/crates/lever/RUSTSEC-2020-0137.md
nvd.nist.gov/vuln/detail/CVE-2020-36457
github.com/vertexclique/lever/issues/15
crates.io/crates/lever