CVE-2020-36448
Data races in cache
An issue was discovered in the cache crate through 2020-11-24 for Rust. There are unconditional implementations of Send and Sync for Cache<K>.
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 cache crate through 2020-11-24 for Rust. There are unconditional implementations of Send and Sync for Cache<K>.
- Record
CVE-2020-36448- 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 cache crate through 2020-11-24 for Rust. There are unconditional implementations of Send and Sync for Cache<K>.
- Record
CVE-2020-36448- Updated
- 2026-11-02
EUVDEUVD-2021-1715 No score
An issue was discovered in the cache crate through 2020-11-24 for Rust. There are unconditional implementations of Send and Sync for Cache<K>.
- Record
EUVD-2021-1715- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g78p-g85h-q6ww
Data races in cache
An issue was discovered in the cache crate through 2020-11-24 for Rust.
Affected versions of this crate unconditionally implement Send/Sync for Cache<K>.
This allows users to insert K that is not Send or not Sync.
This allows users to create data races by using non-Send types like Arc<Cell<T>> or Rc<T> as K in Cache<K>. It is also possible to create data races by using types like Cell<T> or RefCell<T> (types that are Send but not Sync).
Such data races can lead to memory corruption.
- Record
GHSA-g78p-g85h-q6ww- 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-g78p-g85h-q6ww
Data races in cache
An issue was discovered in the cache crate through 2020-11-24 for Rust.
Affected versions of this crate unconditionally implement Send/Sync for Cache<K>.
This allows users to insert K that is not Send or not Sync.
This allows users to create data races by using non-Send types like Arc<Cell<T>> or Rc<T> as K in Cache<K>. It is also possible to create data races by using types like Cell<T> or RefCell<T> (types that are Send but not Sync).
Such data races can lead to memory corruption.
- Record
GHSA-g78p-g85h-q6ww- 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-2020-0128
Cache<K>: Send/Sync impls needs trait bounds on `K`
Affected versions of this crate unconditionally implement Send/Sync for Cache<K>.
This allows users to insert K that is not Send or not Sync.
This allows users to create data races by using non-Send types like Arc<Cell<T>> or Rc<T> as K in Cache<K>. It is also possible to create data races by using types like Cell<T> or RefCell<T> (types that are Send but not Sync).
Such data races can lead to memory corruption.
- Record
RUSTSEC-2020-0128- 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 |
|---|---|---|
| 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-2020-36448 is a high vulnerability (CVSS 8.1) in Cache Project Cache, published November 24, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.10%, the 65th percentile. No source names a fixed version.