{"id":"CVE-2025-66415","summary":"fastify-reply-from bypass of reply forwarding","details":"fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is fixed in 12.5.0.","aliases":["GHSA-2q7r-29rg-6m5h"],"modified":"2026-08-12T03:51:14.109462348Z","published":"2025-12-01T22:39:32.468Z","database_specific":{"cwe_ids":["CWE-441"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66415.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66415.json"},{"type":"ADVISORY","url":"https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-2q7r-29rg-6m5h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66415"},{"type":"FIX","url":"https://github.com/fastify/fastify-reply-from/commit/4d9795cd5b57a36756d37b7f036eae369f69fa66"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/fastify/fastify-reply-from","events":[{"introduced":"0"},{"fixed":"4d9795cd5b57a36756d37b7f036eae369f69fa66"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"last_affected":"12.4.0"}],"source":["CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:fastify:reply-from:*:*:*:*:*:node.js:*:*"}}],"versions":["v12.4.0","v12.3.1","v12.3.0","v12.2.0","v12.1.0","v12.0.2","v12.0.1","v12.0.0","v11.0.2","v11.0.1","v11.0.0","v9.8.0","v9.7.0","v9.6.0","v9.5.0","v9.4.0","v4.18.0","v9.3.0","v9.2.0","v9.1.0","v9.0.2","v10.0.0","v9.0.1","v9.0.0","v8.4.3","v8.4.2","v8.4.1","v8.4.0","v8.3.1","v8.3.0","v8.2.1","v8.2.0","v8.1.0","v8.0.0","v7.0.1","v7.0.0","v6.6.0","v6.5.0","v6.4.3","v6.4.2","v6.4.1","v6.4.0","v6.3.0","v6.2.0","v6.1.0","v6.0.1","v6.0.0","v5.3.0","v5.2.0","v5.1.0","v5.0.2","v5.0.1","v5.0.0","v4.0.0","v3.5.0","v3.4.0","v3.3.0","v3.2.0","v3.1.4","v3.1.3","v3.1.2","v2.2.0","v3.1.1","v3.1.0","v3.0.0","v2.0.1","v2.0.0","v1.1.0","v1.0.0","v0.6.2","v0.6.1","v0.6.0","v0.5.4","v0.5.3","v0.5.2","v0.5.0","v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.1","v0.4.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66415.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}