CVE-2020-36204 json
Data races in im
published 2020-11-09 5 y ago modified 2026-06-17 4 mo ago also GHSA-q9h2-4xhf-23xx , RUSTSEC-2020-0096 , EUVD-2021-1838
- cvss
- 4.7
- 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 im crate through 2020-11-09 for Rust. Because TreeFocus does not have bounds on its Send trait or Sync trait, a data race can occur.
Patch / fix
- crates.io im 15.1.0
- github.com/bodil/im-rs@0b3a7b2 commit
- github.com/bodil/im-rs#158 pull request
- github.com/bodil/im-rs/releases/tag/v15.1.0 release
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- rustsec.org https://rustsec.org/advisories/RUSTSEC-2020-0096.html referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 1.9 | AV:L/AC:M/Au:N/C:N/I:N/A:P |
| OSV | 3.1 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
| GitHub | 3.1 | 4.7 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | im | >=12.0.0, <15.1.0 |
15.1.0 |
Classification
- Weakness
-
- CWE-662 Improper Synchronization
References
-
github.com
/bodil/im-rs/pull/158
web
-
github.com
/bodil/im-rs/commit/0b3a7b228b0fe70446393f55c8b893f349f3f6bd
web
-
rustsec.org
/advisories/RUSTSEC-2020-0096.html
web, exploit, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-36204
advisory
-
github.com
/bodil/im-rs/issues/157
web, report
-
github.com
/bodil/im-rs
package
-
github.com
/bodil/im-rs/releases/tag/v15.1.0
web
-
crates.io
/crates/im
package
Sources
- CVE List CVE-2020-36204
- GitHub Advisory GHSA-q9h2-4xhf-23xx
- NVD CVE-2020-36204
- OSV RUSTSEC-2020-0096
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.