{"id":"CVE-2017-16137","title":"The debug module is vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter","summary":"The debug module is vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter. It takes around 50k characters to block for 2 seconds making this a low severity issue.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-400"],"vendor":"debug_project","product":"debug","affected":["debug >= 2.0.0, < 2.6.9","debug >= 3.0.0, < 3.1.0"],"patched":["debug 3.1.0"],"published":"2018-06-07","updated":"2026-10-15","sourceUpdated":"2026-10-15T16:17:27.250","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2017-16137","references":[{"url":"https://github.com/visionmedia/debug/issues/501","label":"support@hackerone.com"},{"url":"https://github.com/visionmedia/debug/pull/504","label":"support@hackerone.com"},{"url":"https://lists.apache.org/thread.html/r8ba4c628fba7181af58817d452119481adce4ba92e889c643e4c7dd3%40%3Ccommits.netbeans.apache.org%3E","label":"support@hackerone.com"},{"url":"https://lists.apache.org/thread.html/rb5ac16fad337d1f3bb7079549f97d8166d0ef3082629417c39f12d63%40%3Cnotifications.netbeans.apache.org%3E","label":"support@hackerone.com"},{"url":"https://nodesecurity.io/advisories/534","label":"support@hackerone.com"},{"url":"https://github.com/visionmedia/debug/issues/501","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/visionmedia/debug/pull/504","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r8ba4c628fba7181af58817d452119481adce4ba92e889c643e4c7dd3%40%3Ccommits.netbeans.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rb5ac16fad337d1f3bb7079549f97d8166d0ef3082629417c39f12d63%40%3Cnotifications.netbeans.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://nodesecurity.io/advisories/534","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-15T15:53:36.675265Z"},"epss":0.02832,"epssPercentile":0.86558,"ingestedAt":"2026-10-15T16:13:10.853Z","slug":"CVE-2017-16137","body":"## Overview\n\nThe debug module is vulnerable to regular expression denial of service when untrusted user input is passed into the o formatter. It takes around 50k characters to block for 2 seconds making this a low severity issue.\n\n## Affected\n\n- `debug >= 2.0.0, < 2.6.9`\n- `debug >= 3.0.0, < 3.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `debug 3.1.0`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.2,"likelihood":0.6,"exploitation":0,"ransomware":0},"changes":[{"seq":222587,"id":"CVE-2017-16137","ts":1792084750561,"field":"cvss","old":null,"new":"5.3"},{"seq":222586,"id":"CVE-2017-16137","ts":1792084750561,"field":"severity","old":"none","new":"medium"}]}