{"id":"CVE-2016-3956","aliases":["GHSA-m5h6-hr3q-22h5"],"url":"https://o3.security/vulnerability/CVE-2016-3956","summary":"npm Token Leak in npm","details":"The CLI in npm before 2.15.1 and 3.x before 3.8.3, as used in Node.js 0.10 before 0.10.44, 0.12 before 0.12.13, 4 before 4.4.2, and 5 before 5.10.0, includes bearer tokens with arbitrary requests, which allows remote HTTP servers to obtain sensitive information by reading Authorization headers.","published":"2016-07-02T14:59:19.417Z","modified":"2026-07-08T05:48:36.830609379Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"npm","fixedVersion":"2.15.1"},{"ecosystem":"npm","name":"npm","fixedVersion":"3.8.3"}],"fix":{"url":"https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29","label":"npm/npm@f67ecad"},"references":[{"type":"ADVISORY","url":"http://blog.npmjs.org/post/142036323955/fixing-a-bearer-token-vulnerability"},{"type":"ADVISORY","url":"http://www-01.ibm.com/support/docview.wss?uid=swg21980827"},{"type":"ADVISORY","url":"https://github.com/npm/npm/issues/8380"},{"type":"ADVISORY","url":"https://nodejs.org/en/blog/vulnerability/npm-tokens-leak-march-2016/"},{"type":"FIX","url":"https://github.com/npm/npm/commit/f67ecad59e99a03e5aad8e93cd1a086ae087cb29"},{"type":"FIX","url":"https://github.com/npm/npm/commit/fea8cc92cee02c720b58f95f14d315507ccad401"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:48:36.830609379Z"}}