{"cve":"CVE-2021-29451","nvd":{"published":"2021-04-16T22:15:14.233","modified":"2026-06-17T03:47:40.097","status":"Modified","description":"Portofino is an open source web development framework. Portofino before version 5.2.1 did not properly verify the signature of JSON Web Tokens. This allows forging a valid JWT. The issue will be patched in the upcoming 5.2.1 release.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1},"cwes":["CWE-347"],"references":["https://github.com/ManyDesigns/Portofino/commit/8c754a0ad234555e813dcbf9e57d637f9f23d8fb","https://github.com/ManyDesigns/Portofino/security/advisories/GHSA-6g3c-2mh5-7q6x","https://mvnrepository.com/artifact/com.manydesigns/portofino","https://github.com/ManyDesigns/Portofino/commit/8c754a0ad234555e813dcbf9e57d637f9f23d8fb","https://github.com/ManyDesigns/Portofino/security/advisories/GHSA-6g3c-2mh5-7q6x"],"products":["manydesigns:portofino"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-29451","score":0.00949,"percentile":0.61217,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-6g3c-2mh5-7q6x","url":"https://osv.dev/vulnerability/GHSA-6g3c-2mh5-7q6x","summary":"Missing validation of JWT signature in `ManyDesigns/Portofino`","modified":"2026-07-08T06:28:50.211772881Z","packages":[{"ecosystem":"Maven","name":"com.manydesigns:portofino-dispatcher","purl":"pkg:maven/com.manydesigns/portofino-dispatcher","ranges":[">=5.0.0 <5.2.1"],"fixed":["5.2.1"]},{"ecosystem":"Maven","name":"com.manydesigns:portofino-core","purl":"pkg:maven/com.manydesigns/portofino-core","ranges":[">=5.0.0 <5.2.1"],"fixed":["5.2.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}