CVE-2020-36463
Data races in multiqueue
An issue was discovered in the multiqueue crate through 2020-12-25 for Rust. There are unconditional implementations of Send for InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, and FutInnerRecv<RW, 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 multiqueue crate through 2020-12-25 for Rust. There are unconditional implementations of Send for InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, and FutInnerRecv<RW, T>.
- Record
CVE-2020-36463- 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 multiqueue crate through 2020-12-25 for Rust. There are unconditional implementations of Send for InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, and FutInnerRecv<RW, T>.
- Record
CVE-2020-36463- Updated
- 2026-11-02
EUVDEUVD-2021-1853 No score
An issue was discovered in the multiqueue crate through 2020-12-25 for Rust. There are unconditional implementations of Send for InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, and FutInnerRecv<RW, T>.
- Record
EUVD-2021-1853- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-jf43-3v8j-qwwr
Data races in multiqueue
Affected versions of multiqueue unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>). This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.
- Record
GHSA-jf43-3v8j-qwwr- 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
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-r2x6-vrxx-jgv4
Data races in multiqueue
Affected versions of this crate unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>). This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.
- Record
GHSA-r2x6-vrxx-jgv4- 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-jf43-3v8j-qwwr
Data races in multiqueue
Affected versions of multiqueue unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>). This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.
- Record
GHSA-jf43-3v8j-qwwr- 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
- Updated
- 2026-11-02
OSVGHSA-r2x6-vrxx-jgv4
Data races in multiqueue
Affected versions of this crate unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>). This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.
- Record
GHSA-r2x6-vrxx-jgv4- 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-2020-0143
Queues allow non-Send types to be sent to other threads, allowing data races
Affected versions of this crate unconditionally implemented Send for types used in queue implementations (InnerSend<RW, T>, InnerRecv<RW, T>, FutInnerSend<RW, T>, FutInnerRecv<RW, T>).
This allows users to send non-Send types to other threads, which can lead to data race bugs or other undefined behavior.
- Record
RUSTSEC-2020-0143- 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
| Package | Affected | Fixed |
|---|---|---|
multiqueuecrates.io |
through 0.3.2 | None known |
multiqueuecrates.io |
0.0.0-0 and later | None known |
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-2020-36463 is a high vulnerability (CVSS 8.1) in Multiqueue Project Multiqueue, published December 25, 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.
References
rustsec.org/advisories/RUSTSEC-2020-0143.html
raw.githubusercontent.com/rustsec/advisory-db/main/crates/multiqueue/RUSTSEC-2020-0143.md
github.com/schets/multiqueue/issues/31
nvd.nist.gov/vuln/detail/CVE-2020-36463
crates.io/crates/multiqueue