{"id":"CVE-2025-63811","aliases":["GHSA-9mj6-hxhv-w67j","GO-2025-4123"],"url":"https://o3.security/vulnerability/CVE-2025-63811","summary":"jose2go is vulnerable to a JWT bomb attack through its decode function","details":"An issue was discovered in dvsekhvalnov jose2go 1.5.0 thru 1.7.0 allowing an attacker to cause a Denial-of-Service (DoS) via crafted JSON Web Encryption (JWE) token with an exceptionally high compression ratio.","published":"2025-11-12T00:00:00Z","modified":"2026-07-31T18:31:28.822660351Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/dvsekhvalnov/jose2go","fixedVersion":"1.7.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/63xxx/CVE-2025-63811.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-63811"},{"type":"REPORT","url":"https://github.com/dvsekhvalnov/jose2go/issues/33"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-31T18:31:28.822660351Z"}}