{"id":"CVE-2017-16137","aliases":["GHSA-gxpj-cx7g-858c"],"url":"https://o3.security/vulnerability/CVE-2017-16137","summary":"Regular Expression Denial of Service in debug","details":"Affected versions of `debug` are vulnerable to regular expression denial of service when untrusted user input is passed into the `o` formatter. \n\nAs it takes 50,000 characters to block the event loop for 2 seconds, this issue is a low severity issue.\n\nThis was later re-introduced in version v3.2.0, and then repatched in versions 3.2.7 and 4.3.1.\n\n## Recommendation\n\nVersion 2.x.x: Update to version 2.6.9 or later.\nVersion 3.1.x: Update to version 3.1.0 or later.\nVersion 3.2.x: Update to version 3.2.7 or later.\nVersion 4.x.x: Update to version 4.3.1 or later.","published":"2018-06-07T02:29:03.817Z","modified":"2026-10-20T10:48:16.446900955Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.02798,"percentile":0.85748,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"debug","fixedVersion":"2.6.9"},{"ecosystem":"npm","name":"debug","fixedVersion":"3.1.0"},{"ecosystem":"npm","name":"debug","fixedVersion":"3.2.7"},{"ecosystem":"npm","name":"debug","fixedVersion":"4.3.1"}],"fix":{"url":"https://github.com/visionmedia/debug/pull/504","label":"visionmedia/debug#504"},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r8ba4c628fba7181af58817d452119481adce4ba92e889c643e4c7dd3%40%3Ccommits.netbeans.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb5ac16fad337d1f3bb7079549f97d8166d0ef3082629417c39f12d63%40%3Cnotifications.netbeans.apache.org%3E"},{"type":"ADVISORY","url":"https://github.com/visionmedia/debug/issues/501"},{"type":"ADVISORY","url":"https://nodesecurity.io/advisories/534"},{"type":"FIX","url":"https://github.com/visionmedia/debug/pull/504"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16137"},{"type":"WEB","url":"https://github.com/debug-js/debug/issues/797"},{"type":"WEB","url":"https://github.com/debug-js/debug/commit/4e2150207c568adb9ead8f4c4528016081c88020"},{"type":"WEB","url":"https://github.com/debug-js/debug/commit/71169065b5262f9858ac78cc0b688c84a438f290"},{"type":"WEB","url":"https://github.com/debug-js/debug/commit/b6d12fdbc63b483e5c969da33ea6adc09946b5ac"},{"type":"WEB","url":"https://github.com/debug-js/debug/commit/f53962e944a87e6ca9bb622a2a12dffc22a9bb5a"},{"type":"PACKAGE","url":"https://github.com/visionmedia/debug"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r8ba4c628fba7181af58817d452119481adce4ba92e889c643e4c7dd3@%3Ccommits.netbeans.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/rb5ac16fad337d1f3bb7079549f97d8166d0ef3082629417c39f12d63@%3Cnotifications.netbeans.apache.org%3E"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-20T10:48:16.446900955Z"}}