Vulnerability in Nim-Lang Nim
CVE-2021-29495
Nim is a statically typed compiled systems programming language. In Nim standard library before 1.4.2, httpClient SSL/TLS certificate verification was disabled by default. Users can upgrade to version 1.4.2 to receive a patch or, as a workaround, set "verifyMode = CVerifyPeer" as documented.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Nim-Lang Nim
- Nim-Lang Security — versions < 1.4.2
Weakness classification (CWE)
References
- github.com/nim-lang/security/security/advisories/GHSA-9vqv-2jj9-7mqr (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29495?
- CVE-2021-29495 is a medium-severity vulnerability in Nim-Lang Nim, classified under Improper Certificate Validation. CVSS score: 5.9/10. Published 2021-05-07.
- How severe is CVE-2021-29495?
- Medium severity. CVSS v3 base score is 5.9 out of 10.