CVE-2021-29495

low-risk
Published 2021-05-07

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Nim

Affected Vendors

Nim-Lang

References (2)

Third Party Advisory https://github.com/nim-lang/security/security/advisories/GHSA-9vqv-2jj9-7mqr
Third Party Advisory https://github.com/nim-lang/security/security/advisories/GHSA-9vqv-2jj9-7mqr
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal