Server-side Request Forgery (SSRF) Affecting ip-address package, versions >=10.1.1 <10.2.2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 Aug 2026
- disclosed3 Aug 2026
- creditGlitchless
Introduced: 3 Aug 2026
NewCVE-2026-69198 (opens in a new tab)How to fix?
Upgrade ip-address to version 10.2.2 or higher.
Overview
ip-address is an A library for parsing IPv4 and IPv6 IP addresses in node and the browser.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) in the isInSubnet function. An attacker can bypass network trust-boundary checks by appending a CIDR suffix with a shorter prefix (such as /0) to an internal address, causing classification methods to incorrectly treat internal addresses as external. This allows requests to internal resources to be permitted when they should be blocked.
Note: This is only exploitable if an application accepts a bare address string with a CIDR suffix and passes it directly to the constructor before classification, such as in allow/deny fields, webhook targets, or proxy destinations taken as plain hosts rather than parsed from a URL.
Workaround
This vulnerability can be mitigated by stripping the CIDR suffix from the address before classification, for example by re-parsing the address without the suffix.