{"id":"GHSA-9mj6-hxhv-w67j","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.","aliases":["CVE-2025-63811","GO-2025-4123"],"modified":"2026-07-17T21:16:59.732065269Z","published":"2025-11-12T18:31:25Z","database_specific":{"nvd_published_at":"2025-11-12T18:15:35Z","cwe_ids":["CWE-400"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2025-11-14T21:44:36Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-63811"},{"type":"WEB","url":"https://github.com/dvsekhvalnov/jose2go/issues/33"},{"type":"WEB","url":"https://github.com/dvsekhvalnov/jose2go/commit/0a0673dd7f2820a446de5b04b9094b2291d77d5d"},{"type":"PACKAGE","url":"https://github.com/dvsekhvalnov/jose2go"}],"affected":[{"package":{"name":"github.com/dvsekhvalnov/jose2go","ecosystem":"Go","purl":"pkg:golang/github.com/dvsekhvalnov/jose2go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.7.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-9mj6-hxhv-w67j/GHSA-9mj6-hxhv-w67j.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}