CVE-2017-0909

private_address_check Ruby Gem Blacklist Bypass privilege escalation

Published 16 Nov 2017Modified 17 Jun 2026CWE 184

In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD, Ruby Advisory DB. Rated lower by GHSA (high).

Description

The private_address_check ruby gem before 0.4.1 is vulnerable to a bypass due to an incomplete blacklist of common private/local network addresses used to prevent server-side request forgery.

Affected packages and fixed versions

Source	Package	Fixed in
rubygems::Ruby Advisory Database	private_address_check	>= 0.4.1
rubygems::GitHub Security Advisory RubyGems	private_address_check	0.4.1

References

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