CVE-2016-10931 json
Improper Certificate Validation in openssl
published 2016-11-05 10 y ago modified 2026-06-17 4 mo ago also GHSA-34p9-f4q3-c4r7 , RUSTSEC-2016-0001 , EUVD-2021-1528
- cvss
- 8.1
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
An issue was discovered in the openssl crate before 0.9.0 for Rust. There is an SSL/TLS man-in-the-middle vulnerability because certificate verification is off by default and there is no API for hostname verification.
Patch / fix
- crates.io openssl 0.9.0
- rust-openssl_project rust-openssl 0.9.0
Exploit prediction
0.74% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
| OSV | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.0 | 8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | openssl | <0.9.0 >=0.0.0-0, <0.9.0 |
0.9.0 |
Classification
- Weakness
-
- CWE-295 Improper Certificate Validation
References
-
rustsec.org
/advisories/RUSTSEC-2016-0001.html
web, release-notes, vendor-advisory, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2016-10931
advisory
-
github.com
/sfackler/rust-openssl
package
-
github.com
/sfackler/rust-openssl/releases/tag/v0.9.0
web
-
crates.io
/crates/openssl
package
Sources
- CVE List CVE-2016-10931
- GitHub Advisory GHSA-34p9-f4q3-c4r7
- NVD CVE-2016-10931
- OSV RUSTSEC-2016-0001
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.