{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-23T00:32:40.034","vulnerabilities":[{"cve":{"id":"CVE-2023-29020","sourceIdentifier":"security-advisories@github.com","published":"2023-04-21T23:15:20.267","lastModified":"2024-11-21T07:56:24.500","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"@fastify/passport is a port of passport authentication library for the Fastify ecosystem. The CSRF (Cross-Site Request Forger) protection enforced by the `@fastify/csrf-protection` library, when combined with `@fastify/passport` in affected versions, can be bypassed by network and same-site attackers. `fastify/csrf-protection` implements the synchronizer token pattern (using plugins `@fastify/session` and `@fastify/secure-session`) by storing a random value used for CSRF token generation in the `_csrf` attribute of a user's session. The `@fastify/passport` library does not clear the session object upon authentication, preserving the `_csrf` attribute between pre-login and authenticated sessions. Consequently, CSRF tokens generated before authentication are still valid. Network and same-site attackers can thus obtain a CSRF token for their pre-session, fixate that pre-session in the victim's browser via cookie tossing, and then perform a CSRF attack after the victim authenticates. As a solution, newer versions of `@fastify/passport` include the configuration options: `clearSessionOnLogin (default: true)` and `clearSessionIgnoreFields (default: ['passport', 'session'])` to clear all the session attributes by default, preserving those explicitly defined in `clearSessionIgnoreFields`."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-352"},{"lang":"en","value":"CWE-384"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-352"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fastify:passport:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.1.0","matchCriteriaId":"3F071BA9-FBA0-4860-9B99-9D48230422D2"},{"vulnerable":true,"criteria":"cpe:2.3:a:fastify:passport:*:*:*:*:*:node.js:*:*","versionStartIncluding":"2.0.0","versionEndExcluding":"2.3.0","matchCriteriaId":"341AD078-D84A-45B6-876F-7FA286EECAAA"}]}]}],"references":[{"url":"https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html#synchronizer-token-pattern","source":"security-advisories@github.com","tags":["Technical Description"]},{"url":"https://github.com/fastify/fastify-passport/commit/07c90feab9cba0dd4779e47cfb0717a7e2f01d3d","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/fastify/fastify-passport/security/advisories/GHSA-2ccf-ffrj-m4qw","source":"security-advisories@github.com","tags":["Vendor Advisory"]},{"url":"https://owasp.org/www-community/attacks/csrf","source":"security-advisories@github.com","tags":["Technical Description"]},{"url":"https://cheatsheetseries.owasp.org/cheatsheets/Cross-Site_Request_Forgery_Prevention_Cheat_Sheet.html#synchronizer-token-pattern","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Technical Description"]},{"url":"https://github.com/fastify/fastify-passport/commit/07c90feab9cba0dd4779e47cfb0717a7e2f01d3d","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://github.com/fastify/fastify-passport/security/advisories/GHSA-2ccf-ffrj-m4qw","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://owasp.org/www-community/attacks/csrf","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Technical Description"]}]}}]}