{"id":"GHSA-w96v-gf22-crwp","summary":"n8n: Webhook Node IP Whitelist Bypass via Partial String Matching","details":"## Impact\nThe Webhook node’s IP whitelist validation performed partial string matching instead of exact IP comparison. As a result, an incoming request could be accepted if the source IP address merely contained the configured whitelist entry as a substring.\n\nThis issue affected instances where workflow editors relied on IP-based access controls to restrict webhook access. Both IPv4 and IPv6 addresses were impacted. An attacker with a non-whitelisted IP could bypass restrictions if their IP shared a partial prefix with a trusted address, undermining the intended security boundary.\n\n## Patches\nThis issue has been patched in version 2.2.0.\n\nUsers are advised to upgrade to v2.2.0 or later, where IP whitelist validation uses strict IP comparison logic rather than partial string matching.\n\n## Workarounds\nUsers unable to upgrade immediately should avoid relying solely on IP whitelisting for webhook security. Recommended mitigations include:\n- Adding authentication mechanisms such as shared secrets, HMAC signatures, or API keys.\n- Avoiding short or prefix-based whitelist entries.\n- Enforcing IP filtering at the network layer (for example, via reverse proxies or firewalls).","aliases":["CVE-2025-68949"],"modified":"2026-02-03T02:59:51.944343Z","published":"2026-01-13T14:57:12Z","database_specific":{"nvd_published_at":"2026-01-13T19:16:15Z","cwe_ids":["CWE-134","CWE-183","CWE-284"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-01-13T14:57:12Z"},"references":[{"type":"WEB","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-w96v-gf22-crwp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68949"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/issues/23399"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/pull/23399"},{"type":"WEB","url":"https://github.com/n8n-io/n8n/commit/11f8597d4ad69ea3b58941573997fdbc4de1fec5"},{"type":"PACKAGE","url":"https://github.com/n8n-io/n8n"}],"affected":[{"package":{"name":"n8n","ecosystem":"npm","purl":"pkg:npm/n8n"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.36.0"},{"fixed":"2.2.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/01/GHSA-w96v-gf22-crwp/GHSA-w96v-gf22-crwp.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}