{"id":"CVE-2026-40895","aliases":["GHSA-r4q5-vmmm-2653"],"url":"https://o3.security/vulnerability/CVE-2026-40895","summary":"follow-redirects: Custom Authentication Headers Leaked to Cross-Domain Redirect Targets","details":"follow-redirects is an open source, drop-in replacement for Node's `http` and `https` modules that automatically follows redirects. Prior to 1.16.0, when an HTTP request follows a cross-domain redirect (301/302/307/308), follow-redirects only strips authorization, proxy-authorization, and cookie headers (matched by regex at index.js). Any custom authentication header (e.g., X-API-Key, X-Auth-Token, Api-Key, Token) is forwarded verbatim to the redirect target. This vulnerability is fixed in 1.16.0.","published":"2026-04-21T19:59:59.759Z","modified":"2026-09-12T03:31:00.010051237Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"follow-redirects","fixedVersion":"1.16.0"}],"fix":null,"references":[{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40895.json"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:13826"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:14937"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16476"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16532"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16534"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16535"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16542"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:16874"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:17657"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:17699"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:17789"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19109"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19375"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19712"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:20889"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:20938"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21017"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21338"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:21772"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22465"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22629"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:22840"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:23361"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24536"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24539"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24766"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24853"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:24977"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25271"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:25273"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:26010"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27004"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27044"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:27063"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:36882"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:40768"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:41928"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:44235"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:44263"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:44267"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:47728"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:48699"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:50300"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:65126"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-40895"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40895.json"},{"type":"ADVISORY","url":"https://github.com/follow-redirects/follow-redirects/security/advisories/GHSA-r4q5-vmmm-2653"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40895"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2460297"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-12T03:31:00.010051237Z"}}