{"id":"CVE-2018-0114","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-0114","generatedAt":"2026-10-28T21:27:43.768Z","title":"A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token.","description":"A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature (JWS) standard for JSON Web Tokens (JWTs). This standard specifies that a JSON Web Key (JWK) representing a public key can be embedded within the header of a JWS. This public key is then trusted for verification. An attacker could exploit this by forging valid JWS objects by removing the original signature, adding a new public key to the header, and then signing the object using the (attacker-owned) private key associated with the public key embedded in that JWS header.","published":"2018-01-04T06:29:00.000Z","lastModified":"2026-06-17T01:29:36.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-347"],"affected":["cisco/node-jose"],"epss":{"score":0.42651,"percentile":0.98705,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2018-03-20","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":44324,"kind":"exploit","title":"Cisco node-jos < 0.11.0 - Re-sign Tokens","url":"https://www.exploit-db.com/exploits/44324","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/44324.py","file":"exploits/multiple/webapps/44324.py","published":"2018-03-20","added":"2018-03-21","updated":"2019-07-25","author":"zioBlack","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2018-0114"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://github.com/zi0Black/POC-CVE-2018-0114/tree/d3bddb421726a9eddbabfd6a1ca58ff4abca93af"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 42.7%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/102445","tags":["Third Party Advisory","VDB Entry"],"source":"psirt@cisco.com"},{"url":"https://github.com/cisco/node-jose/blob/master/CHANGELOG.md","tags":["Release Notes","Third Party Advisory"],"source":"psirt@cisco.com"},{"url":"https://github.com/zi0Black/POC-CVE-2018-0114","tags":["Exploit","Third Party Advisory"],"source":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/viewAlert.x?alertId=56326","tags":["Patch","Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"https://www.exploit-db.com/exploits/44324/","tags":["Third Party Advisory","VDB Entry"],"source":"psirt@cisco.com"},{"url":"http://www.securityfocus.com/bid/102445","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/cisco/node-jose/blob/master/CHANGELOG.md","tags":["Release Notes","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/zi0Black/POC-CVE-2018-0114","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.cisco.com/security/center/viewAlert.x?alertId=56326","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/44324/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-0114","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}