{"schemaVersion":3,"id":"CVE-2026-93649","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"In the Eclipse Adoptium website (adoptium.net), in every deployment built from commit 0b24ea1 (2025-06-18) up to the fix in commit cbb53cf (2026-09-24), the post-download page /[locale]/download takes a download URL from the \"link\" query parameter and automatically navigates to it with a meta http-equiv=\"refresh\". The URL is checked against a list of trusted prefixes using String.startsWith() on the raw string, while the browser applies RFC 3986 dot-segment normalisation before navigating, so a value such as https://github.com/adoptium/temurin/../../attacker/malware/releases/download/v1/jdk.exe passes the check but resolves to an attacker-controlled repository. A victim who follows a crafted adoptium.net link is shown the genuine \"Thank you for downloading Eclipse Temurin\" page while their browser downloads a binary of the attacker's choosing","dates":{"published":"2026-10-15T13:28:42.590Z","modified":"2026-10-16T18:46:25.952Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00156,"percentile":0.0429,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-16T00:00:00.000Z","score":0.00107,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00156,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00156,"percentile":0.0429}],"last30":[{"date":"2026-10-16T00:00:00.000Z","score":0.00107,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00156,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00156,"percentile":0.0429}]},"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-494","name":"Download of Code Without Integrity Check","description":"The product downloads source code or an executable from a remote location and executes the code without sufficiently verifying the origin and integrity of the code.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/494.html"},{"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":"eclipse foundation","product":"adoptium temurin","name":"Adoptium Temurin","label":"adoptium temurin","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1f9753c","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1f9753c","eol":null,"hubHref":"/vendor/eclipse_foundation/adoptium_temurin"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/adoptium/adoptium.net/security/advisories/GHSA-f228-m952-5r6w#event-1046947","label":"github.com/adoptium/adoptium.net/security/advisories/GHSA-f228-m952-5r6w","hostname":"github.com","tags":[]},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/313","label":"gitlab.eclipse.org/security/cve-assignment/-/work_items/313","hostname":"gitlab.eclipse.org","tags":[]},{"url":"https://github.com/adoptium/adoptium.net/commit/cbb53cf4a41f068a70902217473d7e2fe5d6c6ad","label":"github.com/adoptium/adoptium.net/commit/cbb53cf4a41f068a70902217473d7e2fe5d6c6ad","hostname":"github.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-15T13:28:42.590Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T18:46:25.952Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T08:09:26.333Z","stale":false,"partial":false}}