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TI-2020-12364 Aliases CVE-2020-15692

In Nim 1.2.4, the standard library browsers mishandles the URL argument to…

Priority MEDIUM 49CWE-88Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-88.

Summary

In Nim 1.2.4, the standard library browsers mishandles the URL argument to browsers.openDefaultBrowser. This argument can be a local file path that will be opened in the default explorer. An attacker can pass one argument to the underlying open command to execute arbitrary registered system commands.

Why it matters now

EPSS 0.04205 91st percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*up to 1.2.6Vulnerablenim-lang
  • cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:* Versions up to 1.2.6 Vulnerable ·nim-lang

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15692

References

Exploit 2

Patch 1

Advisory 1

  • TI-2020-12363 In Nim before 1.2.6, the standard library asyncftpclient lacks a check for whether a… CVSS 3.1CRITICAL 9.8
  • TI-2021-04471 Nimble arbitrary code execution for specially crafted package metadata CVSS 3.1HIGH 8.8
  • TI-2021-04473 Nimble fails to validate certificates due to insecure httpClient defaults CVSS 3.1HIGH 8.1
  • TI-2020-12366 In Nim 1.2.4, the standard library httpClient fails to properly validate the server… CVSS 3.1HIGH 7.5
  • TI-2021-04472 Nimble falls back to insecure http url when fetching packages CVSS 3.1HIGH 7.5
  • TI-2021-10206 Nim stdlib httpClient does not validate peer certificates by default CVSS 3.1HIGH 7.5
See all 8 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences