{"cve":"CVE-2026-62987","nvd":{"published":"2026-09-21T17:17:38.340","modified":"2026-09-24T21:25:27.050","status":"Deferred","description":"Fabio is an HTTP(S) and TCP router for deploying applications managed by consul. From 1.6.6 until 1.7.2, the CVE-2025-48865 fix in proxy/http_headers.go uses protectHeaders for a hardcoded set of forwarded headers but omits the operator-configured ClientIPHeader, TLSHeader, and RequestID names. In proxy/http_proxy.go, HTTPProxy.ServeHTTP calls addHeaders to set these trust headers before Go ReverseProxy processes the inbound Connection header, allowing an unauthenticated client to name and remove the configured headers before the request reaches the backend. Deployments that enable the corresponding proxy.header options can therefore lose client-IP, TLS-termination, or request-correlation signals used by backend authorization and auditing; the options are empty by default, and the hardcoded protected forwarded headers are unaffected. This issue is fixed in version 1.7.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N","score":5.8},"cwes":["CWE-290","CWE-348"],"references":["https://github.com/fabiolb/fabio/commit/240526a8004077edad4fb96d25b382bfc3901357","https://github.com/fabiolb/fabio/releases/tag/v1.7.2","https://github.com/fabiolb/fabio/security/advisories/GHSA-fq95-v8xc-jm3v","https://github.com/fabiolb/fabio/security/advisories/GHSA-fq95-v8xc-jm3v"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-62987","score":0.00202,"percentile":0.10185,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-fq95-v8xc-jm3v","url":"https://osv.dev/vulnerability/GHSA-fq95-v8xc-jm3v","summary":"Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header","modified":"2026-10-01T20:55:42.177655229Z","packages":[{"ecosystem":"Go","name":"github.com/fabiolb/fabio","purl":"pkg:golang/github.com/fabiolb/fabio","ranges":[">=1.6.6 <1.7.2"],"fixed":["1.7.2"]}]},{"id":"GO-2026-6566","url":"https://osv.dev/vulnerability/GO-2026-6566","summary":"Fabio - Incomplete fix for CVE-2025-48865: operator-configured trust headers (clientip/tls/requestid) still strippable via the Connection header in github.com/fabiolb/fabio","modified":"2026-10-01T20:45:14.079452307Z","packages":[{"ecosystem":"Go","name":"github.com/fabiolb/fabio","purl":"pkg:golang/github.com/fabiolb/fabio","ranges":[">=1.6.6 <1.7.2"],"fixed":["1.7.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}