Vulnerability in ip-address (CVE-2026-69192)
Summary
Vulnerability in ip-address (CVE-2026-69192). Risk of unauthorized operations or information disclosure. Exploitable via Address4. Mitigation: upgrade to 10.3.1 or later.
Original description
The description as published by the source.
Summary
Address4 accepts an octet written with a leading zero and decodes it as decimal, while the WHATWG URL host parser, inet_aton, and getaddrinfo all decode a leading zero as octal. The library and the network stack therefore disagree about which host a string names. new Address4('012.0.0.1') reports correctForm() of 12.0.0.1 and isPrivate() of false, but fetch('http://012.0.0.1/') connects to 10.0.0.1.
An application that builds a network trust-boundary decision on these checks (for example a filter intended to block Server-Side Request Forgery, or SSRF) will classify an internal target as external and allow the request. SSRF is an attack in which a user-supplied address coaxes the server into making a request to an internal destination the user could not otherwise reach, such as a loopback service or a cloud metadata endpoint.
Details
Address4.parse gates untrusted input on RE_ADDRESS (src/v4/constants.ts:5), whose per-octet alternative is:
(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)
The [01]?[0-9][0-9]? branch matches a leading zero, so 012 passes validation. Every downstream decode then reads the octet with parseInt(part, 10) (src/common.ts:87), yielding 12. A resolver reading the same string treats the leading 0 as base 8 and yields 10.
The defect is in the parse gate rather than in any one classifier, so every consumer of Address4 inherits it: isPrivate(), isLoopback(), isLinkLocal(), isCGNAT(), `isInSu…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-69192 has been found in ip-address.
Attackers can target a specific entry point like Address4 over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade ip-address to 10.3.1 or later.
If unsure, ask your IT team or search "ip-address CVE-2026-69192" on the vendor's site.
CVE-2026-69192 (ip-address) — CWE-20
Attack surface: Address4 / inet_aton / getaddrinfo / false
Patched: 10.3.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-20) exists in ip-address. Attackers reach the vulnerable code path via Address4.
Check the vendor advisory for the affected versions of ip-address. Attack surface: Address4 / inet_aton / getaddrinfo / false.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 10.3.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'ip-address' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'ip-address' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
ip-addressを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade ip-address to 10.3.1ステージング環境で 10.3.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-69192 node-ip-address
- Ubuntu UBUNTU-CVE-2026-69192 node-ip-address