CVE-2020-35876 json
Use after free in rio
published 2020-05-11 6 y ago modified 2026-06-17 4 mo ago also GHSA-8rc5-mr4f-m243 , RUSTSEC-2020-0021 , EUVD-2021-1647
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 0
- none known
Summary
An issue was discovered in the rio crate through 2020-05-11 for Rust. A struct can be leaked, allowing attackers to obtain sensitive information, cause a use-after-free, or cause a data race.
Patch / fix
- github.com/spacejam/rio#31 pull request
Exploit prediction
1.56% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | rio | <=0.9.4 >=0.0.0-0 |
no fix listed |
Classification
References
-
github.com
/spacejam/rio/pull/31
web
-
rustsec.org
/advisories/RUSTSEC-2020-0021.html
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-35876
advisory
-
github.com
/spacejam/rio/issues/11
web, report
-
github.com
/spacejam/rio
package
-
crates.io
/crates/rio
package
Sources
- CVE List CVE-2020-35876
- GitHub Advisory GHSA-8rc5-mr4f-m243
- NVD CVE-2020-35876
- OSV RUSTSEC-2020-0021
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