{"schemaVersion":3,"id":"CVE-2026-48856","aliases":["UBUNTU-CVE-2026-48856","DEBIAN-CVE-2026-48856"],"status":"published","duplicateOf":null,"title":null,"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 17.0 before OTP 27.3.4.19, OTP 28.5.0.8, and OTP 29.1.2, corresponding to inets from 5.10 before 9.3.2.8, 9.6.2.4, and 9.8.1. Whether OTP before OTP 17.0, corresponding to inets before 5.10, is affected is unknown.","dates":{"published":"2026-06-10T14:41:51.616Z","modified":"2026-10-15T10:50:06.903Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.1,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.1,"severity":"high","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","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":7.1,"severity":"high","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","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":7.2,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":7.2,"impact":6,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.1,"severity":"high","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00335,"percentile":0.2547,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00335},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00335,"percentile":0.2547}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00558,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00335,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00335,"percentile":0.2547}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site ('Open Redirect')","description":"The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Low","url":"https://cwe.mitre.org/data/definitions/601.html"}],"affected":[{"vendor":"debian","product":"erlang","name":"erlang","label":"erlang","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/erlang","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1:27.3.4.1+dfsg-1+deb13u3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:29.0.2+dfsg-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1:27.3.4.1+dfsg-1+deb13u3 | < 1:29.0.2+dfsg-1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"erlang","name":"erlang","label":"erlang","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/erlang","purlType":"deb","versions":[{"text":"< 1:16.b.3-dfsg-1ubuntu2.2+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:18.3-dfsg-1ubuntu3.1+esm4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:20.2.2+dfsg-1ubuntu2+esm4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:22.2.7+dfsg-1ubuntu0.5+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 1:24.2.1+dfsg-1ubuntu0.8","noFixRecorded":false,"fixedIn":null},{"text":"< 1:25.3.2.8+dfsg-1ubuntu4.8","noFixRecorded":false,"fixedIn":null},{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1:27.3.4.6+dfsg-1ubuntu0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:16.b.3-dfsg-1ubuntu2.2+esm3 | < 1:18.3-dfsg-1ubuntu3.1+esm4 | < 1:20.2.2+dfsg-1ubuntu2+esm4 | < 1:22.2.7+dfsg-1ubuntu0.5+esm3 | < 1:24.2.1+dfsg-1ubuntu0.8 | < 1:25.3.2.8+dfsg-1ubuntu4.8 | All versions (No fix recorded) | < 1:27.3.4.6+dfsg-1ubuntu0.2","eol":null,"hubHref":null},{"vendor":"erlang","product":"erlang\\/inets","name":"erlang\\/inets","label":"erlang\\/inets","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 5.10, < 9.3.2.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.6, < 9.6.2.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 9.7, < 9.7.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.10, < 9.3.2.6 | ≥ 9.6, < 9.6.2.2 | ≥ 9.7, < 9.7.1","eol":null,"hubHref":"/vendor/erlang/erlanginets"},{"vendor":"erlang","product":"erlang\\/otp","name":"Erlang/OTP","label":"erlang\\/otp","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 17.0, < 27.3.4.13","noFixRecorded":false,"fixedIn":null},{"text":"≥ 28.0, < 28.5.0.2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 29.0, < 29.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 17.0, < 27.3.4.13 | ≥ 28.0, < 28.5.0.2 | ≥ 29.0, < 29.0.2","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"erlang","label":"Erlang","category":"lang"}},"hubHref":"/vendor/erlang/erlangotp"},{"vendor":"erlang","product":"otp","name":"OTP","label":"otp","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 17.0","noFixRecorded":true,"fixedIn":null},{"text":"≥ 5.10","noFixRecorded":true,"fixedIn":null},{"text":"≥ 84adefa331c4159d432d22840663c38f155cd4c1, < f78fae9294886f95545a2212671282eda230def1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 17.0 (No fix recorded) | ≥ 5.10 (No fix recorded) | ≥ 84adefa331c4159d432d22840663c38f155cd4c1, < f78fae9294886f95545a2212671282eda230def1","eol":null,"hubHref":"/vendor/erlang/otp"}],"affectedCount":5,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/erlang/otp/security/advisories/GHSA-m75x-4vwg-ggjh","label":"github.com/erlang/otp/security/advisories/GHSA-m75x-4vwg-ggjh","hostname":"github.com","tags":["Vendor Advisory","Related","REPORT","Mitigation"]},{"url":"https://cna.erlef.org/cves/CVE-2026-48856.html","label":"cna.erlef.org/cves/CVE-2026-48856.html","hostname":"cna.erlef.org","tags":["Related","REPORT","Mitigation","Third Party Advisory"]},{"url":"https://osv.dev/vulnerability/EEF-CVE-2026-48856","label":"osv.dev/vulnerability/EEF-CVE-2026-48856","hostname":"osv.dev","tags":["Related","REPORT","Mitigation","Third Party Advisory"]},{"url":"https://www.erlang.org/doc/system/versions.html#order-of-versions","label":"www.erlang.org/doc/system/versions.html","hostname":"www.erlang.org","tags":["X Version Scheme","Product"]},{"url":"https://github.com/erlang/otp/commit/688d748d6f7a6a06b13b662a1d3de8af97079612","label":"github.com/erlang/otp/commit/688d748d6f7a6a06b13b662a1d3de8af97079612","hostname":"github.com","tags":["Patch"]},{"url":"https://ubuntu.com/security/CVE-2026-48856","label":"ubuntu.com/security/CVE-2026-48856","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-48856","label":"www.cve.org/CVERecord?id=CVE-2026-48856","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8901-1","label":"ubuntu.com/security/notices/USN-8901-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-48856","label":"security-tracker.debian.org/tracker/CVE-2026-48856","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48856","label":"nvd.nist.gov/vuln/detail/CVE-2026-48856","hostname":"nvd.nist.gov","tags":["Oval","Advisory"]},{"url":"https://github.com/erlang/otp/commit/f78fae9294886f95545a2212671282eda230def1","label":"github.com/erlang/otp/commit/f78fae9294886f95545a2212671282eda230def1","hostname":"github.com","tags":["Patch"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:11559-1","OPENSUSE-SU-2026:11560-1","SUSE-SU-2026:3579-1","SUSE-SU-2026:3645-1","USN-8901-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:11559-1","OPENSUSE-SU-2026:11560-1","SUSE-SU-2026:3579-1","SUSE-SU-2026:3645-1","USN-8901-1"]},"timeline":[{"kind":"published","date":"2026-06-10T14:41:51.616Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T10:50:06.903Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":28,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T15:44:22.922Z","stale":false,"partial":false}}