{"id":"CVE-2026-107275","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107275","generatedAt":"2026-10-28T10:48:24.793Z","title":"@fastify/jwt is a JSON Web Token plugin for the Fastify web framework.","description":"@fastify/jwt is a JSON Web Token plugin for the Fastify web framework. In versions before 10.2.3, a time span passed to expiresIn, notBefore, or maxAge that the plugin's parser cannot read, such as a compound span, a month unit, an ISO 8601 duration, a decimal comma, or a value with surrounding whitespace, is silently dropped instead of refused. On the signing path this produces a token with no expiration claim that never expires, and on the verification path a configured maxAge stops being enforced, so a token that should be rejected for age is accepted. The issue is fixed in @fastify/jwt 10.2.3, and users should upgrade to 10.2.3 or later. As a workaround, pass these options as a number of seconds, or verify that any time-span string parses to a finite value before relying on it.","published":"2026-10-08T12:17:15.000Z","lastModified":"2026-10-08T20:49:23.000Z","status":"Awaiting Analysis","sourceIdentifier":"ce714d77-add3-4f53-aff5-83d477b104bb","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"},"cwe":["CWE-390","CWE-613","CWE-754"],"affected":[],"epss":{"score":0.00312,"percentile":0.23966,"date":"2026-10-27","history":[{"date":"2026-10-09","score":0.00312,"percentile":0.22163}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-08T12:17:15.000Z","detail":{"score":"6.8","severity":"MEDIUM","publishedAt":"2026-10-08T12:17:14.553Z"},"summary":"New CVE, medium severity (CVSS 6.8)."}],"references":[{"url":"https://cna.openjsf.org/security-advisories.html","source":"ce714d77-add3-4f53-aff5-83d477b104bb"},{"url":"https://github.com/fastify/fastify-jwt/security/advisories/GHSA-9x4w-r9p5-5h7m","source":"ce714d77-add3-4f53-aff5-83d477b104bb"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107275","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."}