CVE-2021-29495

Nim stdlib httpClient does not validate peer certificates by default

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Published May 7, 2021 CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

nim-lang

security

affected

Version	Status	Constraints
`< 1.4.2`	affected	—

Configuration 1 [-]

cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-16092	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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.491% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/nim-lang/security/security/advisories/GHSA-9vqv-2jj9-7mqr

History

No history.

Subscriptions

Nim-lang Nim

Weaknesses

CWE-295

Sources

CVE record Updated: Aug 3, 2024, 10:11 PM

Status: PUBLISHED
Assigner: GitHub_M
Published: May 7, 2021, 3:15 PM
Updated: Aug 3, 2024, 10:11 PM
Reserved: Mar 30, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:47 AM

Status: Modified
Published: May 7, 2021, 4:15 PM
Modified: Jun 17, 2026, 3:47 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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