CVE-2021-30454 json
Uninitialized memory access in outer_cgi
published 2021-01-31 5 y ago modified 2026-06-17 4 mo ago also GHSA-6vmq-jh76-hq43 , RUSTSEC-2021-0051 , EUVD-2021-1603
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
An issue was discovered in the outer_cgi crate before 0.2.1 for Rust. A user-provided Read instance receives an uninitialized memory buffer from KeyValueReader.
Patch / fix
- crates.io outer_cgi 0.2.1
- outer_cgi_project outer_cgi 0.2.1
Exploit prediction
1.14% chance of exploitation in the next 30 days, higher than 66% 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 | outer_cgi | <0.2.1 >=0.0.0-0, <0.2.1 |
0.2.1 |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
github.com
/SolraBizna/outer_cgi/commit/dd59b3066e616a08e756f72de8dc3ab11b7036c4
web
-
rustsec.org
/advisories/RUSTSEC-2021-0051.html
web, third-party-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-30454
advisory
-
github.com
/SolraBizna/outer_cgi/issues/1
web, report
-
github.com
/SolraBizna/outer_cgi
package
-
crates.io
/crates/outer_cgi
package
Sources
- CVE List CVE-2021-30454
- GitHub Advisory GHSA-6vmq-jh76-hq43
- NVD CVE-2021-30454
- OSV RUSTSEC-2021-0051
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