{"schemaVersion":3,"id":"CVE-2017-1000070","aliases":["GHSA-jm34-xm8m-w958"],"status":"published","duplicateOf":null,"title":null,"description":"The Bitly oauth2_proxy in version 2.1 and earlier was affected by an open redirect vulnerability during the start and termination of the 2-legged OAuth flow. This issue was caused by improper input validation and a violation of RFC-6819","dates":{"published":"2017-07-13T20:00:00.000Z","modified":"2024-08-05T21:53:06.342Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.1,"severity":"medium","version":"3.0","versionLabel":"v3.0","source":"NVD","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.0","versionLabel":"v3.0","source":"NVD","score":6.1,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5.8,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.0","versionLabel":"v3.0","source":"OSV · Go","score":6.1,"severity":"medium","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","exploitability":7.2,"impact":4.5,"computed":true}]},"epss":{"probability":0.00996,"percentile":0.62297,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":-0.5010000000000001,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01497},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01497,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00996,"percentile":0.62297}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01497,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00996,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00996,"percentile":0.62297}]},"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":"github.com/bitly","product":"oauth2_proxy","name":"github.com/bitly/oauth2_proxy","label":"oauth2_proxy","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/bitly/oauth2_proxy","purlType":"golang","versions":[{"text":"< 2.2.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.2.0","eol":null,"hubHref":null},{"vendor":"oauth2_proxy_project","product":"oauth2_proxy","name":"oauth2 proxy","label":"oauth2_proxy","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 2.1","eol":null,"hubHref":"/vendor/oauth2_proxy_project/oauth2_proxy"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/bitly/oauth2_proxy/pull/359","label":"github.com/bitly/oauth2_proxy/pull/359","hostname":"github.com","tags":["X Refsource CONFIRM","Patch","Third Party Advisory","WEB"]},{"url":"https://tools.ietf.org/html/rfc6819#section-5.2.3.5","label":"tools.ietf.org/html/rfc6819","hostname":"tools.ietf.org","tags":["X Refsource MISC","Technical Description","WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000070","label":"nvd.nist.gov/vuln/detail/CVE-2017-1000070","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/bitly/oauth2_proxy/issues/228","label":"github.com/bitly/oauth2_proxy/issues/228","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/bitly/oauth2_proxy/commit/289a6ccf463a425c7606178c510fc5eeb9c8b050","label":"github.com/bitly/oauth2_proxy/commit/289a6ccf463a425c7606178c510fc5eeb9c8b050","hostname":"github.com","tags":["WEB"]},{"url":"https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-1000070","label":"web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2017-1000070","hostname":"web.nvd.nist.gov","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2017-07-13T20:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-05T21:53:06.342Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":25,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T21:32:33.495Z","stale":false,"partial":false}}