{"id":"CVE-2026-48856","revision":null,"records":[{"revision":"4c2ba7630c304f47bbaf1b3a49156e11","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-48856","aliases":[],"title":"httpc leaks Authorization header to cross-origin redirect targets","description":"Sensitive Data Exposure vulnerability in Erlang OTP inets (httpc_response module) allows Retrieve Embedded Sensitive Data.\n\nThe httpc client forwards the Authorization and Proxy-Authorization request headers to redirect targets without checking whether the redirect crosses an origin boundary. httpc_response:redirect/2 constructs the redirected request by updating only the host field of the header record; all other fields (including authorization and proxy_authorization) are copied verbatim. The redirect target host is never compared against the original host.\n\nautoredirect defaults to true, so this affects all httpc callers that do not explicitly disable automatic redirects.\n\nAn attacker who controls a server that the victim contacts via httpc can issue a cross-origin 3xx redirect to a server they also control. The Authorization header (including Basic credentials derived from URL userinfo via httpc_request:handle_user_info/2) is forwarded to the redirect target, allowing credential theft. The same applies to the Proxy-Authorization header.\n\nThis vulnerability is associated with program files lib/inets/src/http_client/httpc_response.erl.\n\nThis issue affects OTP from OTP\u00A017.0 before OTP\u00A027.3.4.19, OTP\u00A028.5.0.8, and OTP\u00A029.1.2, corresponding to inets from 5.10 before 9.3.2.8, 9.6.2.4, and 9.8.1. Whether OTP before OTP\u00A017.0, corresponding to inets before 5.10, is affected is unknown.","state":0,"publishedAt":"2026-06-10T14:41:51.616+00:00","modifiedAt":"2026-10-15T10:50:06.903+00:00","affected":[{"ecosystem":"Vendor product","name":"otp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"cpes\": [\n                        \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unknown\",\n                    \"modules\": [\n                        \"httpc_response\"\n                    ],\n                    \"packageName\": \"otp\",\n                    \"packageURL\": \"pkg:software-id/erlang.org/otp\",\n                    \"product\": \"OTP\",\n                    \"programFiles\": [\n                        \"lib/inets/src/http_client/httpc_response.erl\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"httpc_response:redirect/2\"\n                        }\n                    ],\n                    \"vendor\": \"Erlang\",\n                    \"versions\": [\n                        {\n                            \"changes\": [\n                                {\n                                    \"at\": \"27.3.4.19\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"28.5.0.8\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"29.1.2\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"lessThan\": \"*\",\n                            \"status\": \"affected\",\n                            \"version\": \"17.0\",\n                            \"versionType\": \"otp\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"inets","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"cpes\": [\n                        \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unknown\",\n                    \"modules\": [\n                        \"httpc_response\"\n                    ],\n                    \"packageName\": \"inets\",\n                    \"packageURL\": \"pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp&vcs_url=git%2Bhttps:%2F%2Fgithub.com%2Ferlang%2Fotp.git\",\n                    \"product\": \"OTP\",\n                    \"programFiles\": [\n                        \"src/http_client/httpc_response.erl\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"httpc_response:redirect/2\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/erlang/otp\",\n                    \"vendor\": \"Erlang\",\n                    \"versions\": [\n                        {\n                            \"changes\": [\n                                {\n                                    \"at\": \"9.3.2.8\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"9.6.2.4\",\n                                    \"status\": \"unaffected\"\n                                },\n                                {\n                                    \"at\": \"9.8.1\",\n                                    \"status\": \"unaffected\"\n                                }\n                            ],\n                            \"lessThan\": \"*\",\n                            \"status\": \"affected\",\n                            \"version\": \"5.10\",\n                            \"versionType\": \"otp\"\n                        }\n                    ]\n                }"},{"ecosystem":"https://github.com","name":"erlang/otp","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"collectionURL\": \"https://github.com\",\n                    \"cpes\": [\n                        \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"\n                    ],\n                    \"defaultStatus\": \"unknown\",\n                    \"modules\": [\n                        \"httpc_response\"\n                    ],\n                    \"packageName\": \"erlang/otp\",\n                    \"packageURL\": \"pkg:github/erlang/otp\",\n                    \"product\": \"OTP\",\n                    \"programFiles\": [\n                        \"lib/inets/src/http_client/httpc_response.erl\"\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"httpc_response:redirect/2\"\n                        }\n                    ],\n                    \"repo\": \"https://github.com/erlang/otp\",\n                    \"vendor\": \"Erlang\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"f78fae9294886f95545a2212671282eda230def1\",\n                            \"status\": \"affected\",\n                            \"version\": \"84adefa331c4159d432d22840663c38f155cd4c1\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"lessThan\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"version\": \"f78fae9294886f95545a2212671282eda230def1\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/erlang/otp/security/advisories/GHSA-m75x-4vwg-ggjh","https://cna.erlef.org/cves/CVE-2026-48856.html","https://osv.dev/vulnerability/EEF-CVE-2026-48856","https://www.erlang.org/doc/system/versions.html#order-of-versions","https://github.com/erlang/otp/commit/f78fae9294886f95545a2212671282eda230def1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-48856","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-48856","identifiers":["CVE-2026-48856"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EPSS backfill.","generation":"2026-11-09T17:05:03.6461191+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T17:05:03.6461191+00:00","lastSuccessAt":"2026-11-09T17:05:03.8539711+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.8539712+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-27d7fc34e294426a8947cddc275fdd88","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T17:05:13.4623818+00:00","lastSuccessAt":"2026-11-09T17:05:13.459+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:13.459+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T17:04:56.7195673+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:04:56.7195673+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T17:02:16.3773977+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:02:16.3773977+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-761ecc9061239b0da572dc9254c6f384c1d19339eb08408c436647a2f26129e9","complete":true,"records":3064,"lastAttemptAt":"2026-11-09T17:05:03.6013858+00:00","lastSuccessAt":"2026-11-09T17:05:03.4044794+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:05:03.6013858+00:00","snapshotPublishedAt":"2026-11-09T16:33:20+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-f8ac1981a68d9f0cc4ed8b05de89035ef9b503c12568a353caa684b6b64f832a","complete":true,"records":231305,"lastAttemptAt":"2026-11-09T17:04:55.1051927+00:00","lastSuccessAt":"2026-11-09T17:04:53.3741561+00:00","error":null,"lastVerifiedAt":"2026-11-09T17:04:55.1051927+00:00","snapshotPublishedAt":"2026-11-09T16:33:28+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}