{"id":"CVE-2017-16136","aliases":["EUVD-2018-0315","GHSA-qx2f-477c-35rq"],"status":"published","title":"method-override ReDoS when untrusted user input passed into X-HTTP-Method-Override header","description":"method-override is a module used by the Express.js framework to let you use HTTP verbs such as PUT or DELETE in places where the client doesn't support it. method-override is vulnerable to a regular expression denial of service vulnerability when specially crafted input is passed in to be parsed via the X-HTTP-Method-Override header.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01196,"percentile":0.68281,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2018-06-07T02:00:00Z","modified":"2026-10-24T10:31:00Z","fixes":[{"ecosystem":"npm","package":"method-override","fixed_in":["2.3.10"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"method-override","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.2"},{"last_affected":"1.0.2"},{"fixed":"2.3.10"}]}],"versions":["1.0.2"]},{"source":"ghsa","ecosystem":"npm","package":"method-override","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.3.10"}]}]},{"source":"osv","ecosystem":"npm","package":"method-override","ranges":[{"type":"SEMVER","events":[{"introduced":"1.0.2"},{"fixed":"2.3.10"}]}],"versions":["1.0.2"]},{"source":"osv","ecosystem":"npm","package":"method-override","ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.3.10"}]}]}],"products":[{"vendor":"expressjs","product":"method-override"},{"vendor":"hackerone","product":"method-override node module"}],"references":[{"url":"https://nodesecurity.io/advisories/538","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-16136","tags":["advisory"]},{"url":"https://www.npmjs.com/advisories/538","tags":["web"]},{"url":"https://github.com/expressjs/method-override/commit/4c58835a61fdf7a8e070d6f8ecd5379a961d0987","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qx2f-477c-35rq"},{"url":"https://github.com/expressjs/method-override","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2017-16136","description":"method-override is a module used by the Express.js framework to let you use HTTP verbs such as PUT or DELETE in places where the client doesn't support it. method-override is vulnerable to a regular expression denial of service vulnerability when specially crafted input is passed in to be parsed via the X-HTTP-Method-Override header.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-17T03:18:13.96Z","cwes":["CWE-400"],"updated_at":"2026-11-02T14:33:21.747294Z"}],"euvd":[{"id":"EUVD-2018-0315","description":"method-override is a module used by the Express.js framework to let you use HTTP verbs such as PUT or DELETE in places where the client doesn't support it. method-override is vulnerable to a regular expression denial of service vulnerability when specially crafted input is passed in to be parsed via the X-HTTP-Method-Override header.","status":"published","published":"2018-06-07T02:00:00Z","modified":"2024-09-17T03:18:13Z","updated_at":"2026-11-03T00:28:32.883624Z"}],"ghsa":[{"id":"GHSA-qx2f-477c-35rq","title":"method-override ReDoS when untrusted user input passed into X-HTTP-Method-Override header","description":"Affected versions of `method-override` are vulnerable to a regular expression denial of service vulnerability when untrusted user input is passed into the `X-HTTP-Method-Override` header.\n\n\n## Recommendation\n\nUpdate to version 2.3.10 or later","status":"published","published":"2018-07-24T20:06:04Z","modified":"2023-09-11T18:24:37Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:37:03.916765Z"}],"nvd":[{"id":"CVE-2017-16136","description":"method-override is a module used by the Express.js framework to let you use HTTP verbs such as PUT or DELETE in places where the client doesn't support it. method-override is vulnerable to a regular expression denial of service vulnerability when specially crafted input is passed in to be parsed via the X-HTTP-Method-Override header.","status":"published","published":"2018-06-07T02:29:03.77Z","modified":"2026-06-17T01:08:51.41Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:04:17.638656Z"}],"osv":[{"id":"CVE-2017-16136","description":"method-override is a module used by the Express.js framework to let you use HTTP verbs such as PUT or DELETE in places where the client doesn't support it. method-override is vulnerable to a regular expression denial of service vulnerability when specially crafted input is passed in to be parsed via the X-HTTP-Method-Override header.","status":"published","published":"2018-06-07T02:29:03.77Z","modified":"2026-10-24T10:31:00.70060446Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:04.853379Z"},{"id":"GHSA-qx2f-477c-35rq","title":"method-override ReDoS when untrusted user input passed into X-HTTP-Method-Override header","description":"Affected versions of `method-override` are vulnerable to a regular expression denial of service vulnerability when untrusted user input is passed into the `X-HTTP-Method-Override` header.\n\n\n## Recommendation\n\nUpdate to version 2.3.10 or later","status":"published","published":"2018-07-24T20:06:04Z","modified":"2023-11-08T03:59:06.980734Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:55.122811Z"}]}}