CVE-2020-35908 json
Improper `Sync` implementation on `FuturesUnordered` in futures-utils can cause data corruption
published 2020-01-24 6 y ago modified 2026-06-17 4 mo ago also GHSA-5r9g-j7jj-hw6c , RUSTSEC-2020-0062 , EUVD-2022-2648
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 27%
- public exploits
- 0
- none known
Summary
An issue was discovered in the futures-util crate before 0.3.2 for Rust. FuturesUnordered can lead to data corruption because Sync is mishandled.
Patch / fix
- crates.io futures-util 0.3.2
- rust-lang future-utils 0.3.2
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
| OSV | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | futures-util | >=0.3.0, <0.3.2 |
0.3.2 |
References
-
rustsec.org
/advisories/RUSTSEC-2020-0062.html
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-35908
advisory
-
github.com
/rust-lang/futures-rs/issues/2050
web, report
-
github.com
/rust-lang/futures-rs
package
-
crates.io
/crates/futures-util
package
Sources
- CVE List CVE-2020-35908
- GitHub Advisory GHSA-5r9g-j7jj-hw6c
- NVD CVE-2020-35908
- OSV RUSTSEC-2020-0062
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