{"id":"CVE-2018-1000539","aliases":["DEBIAN-CVE-2018-1000539","DSA-4283-1","EUVD-2018-0296","GHSA-mj4x-wcxf-hm8x","UBUNTU-CVE-2018-1000539"],"status":"published","title":"Json-jwt did not verify the cryptographic signature for data","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00765,"percentile":0.55767,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-347"],"published":"2018-06-26T16:00:00Z","modified":"2026-10-23T18:02:55Z","fixes":[{"ecosystem":"RubyGems","package":"json-jwt","fixed_in":["1.9.4"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"ruby-json-jwt","fixed_in":["1.9.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ruby-json-jwt","fixed_in":["1.9.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ruby-json-jwt","fixed_in":["1.9.4-1"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"ruby-json-jwt","fixed_in":["1.6.2-1+deb9u1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.5.1"},{"fixed":"1.9.4"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"ruby-json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ruby-json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ruby-json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-1"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"ruby-json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.2-1+deb9u1"}]}],"versions":["1.6.2-1"]},{"source":"osv","ecosystem":"RubyGems","package":"json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.5.1"},{"fixed":"1.9.4"}]}],"versions":["0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.5.6","0.6.0","0.6.1","0.7.0","0.7.0.alpha","0.7.0.alpha2","0.7.1","0.8.0","0.8.1","1.0.0","1.0.1","1.0.2","1.0.3","1.1.0","1.2.0","1.2.1","1.2.2","1.2.3","1.2.4","1.3.0","1.3.1","1.4.0","1.5.0","1.5.1","1.5.2","1.6.0","1.6.1","1.6.2","1.6.3","1.6.4","1.6.5","1.7.0","1.7.1","1.7.2","1.8.0","1.8.1","1.8.1.pre","1.8.2","1.8.3","1.9.0","1.9.1","1.9.2","1.9.3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ruby-json-jwt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.7.2-1"]}],"products":[{"vendor":"json-jwt_project","product":"json-jwt"}],"references":[{"url":"https://github.com/nov/json-jwt/pull/62","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web","report"]},{"url":"https://www.debian.org/security/2018/dsa-4283","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000539","tags":["advisory"]},{"url":"https://github.com/nov/json-jwt/commit/a3b2147f0f6d9aca653e7a30e453d3a92b33413f","tags":["web"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/json-jwt/CVE-2018-1000539.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-mj4x-wcxf-hm8x"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-1000539","tags":["advisory"]},{"url":"https://github.com/nov/json-jwt","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2018-1000539","tags":["report"]},{"url":"https://github.com/nov/json-jwt/commit/3393f394f271c87bd42ec23c300727b4437d1638","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1000539","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-1000539","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:00:00Z","modified":"2024-08-05T12:40:47.206Z","updated_at":"2026-11-02T14:35:10.685174Z"}],"euvd":[{"id":"EUVD-2018-0296","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:00:00Z","modified":"2024-08-05T12:40:47Z","updated_at":"2026-11-03T02:39:26.268404Z"}],"ghsa":[{"id":"GHSA-mj4x-wcxf-hm8x","title":"Json-jwt did not verify the cryptographic signature for data","description":"The json-jwt rubygem version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-07-31T18:13:51Z","modified":"2023-08-25T23:55:12Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:37:00.680009Z"}],"nvd":[{"id":"CVE-2018-1000539","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:29:02.163Z","modified":"2026-06-17T01:32:52.31Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:04:30.900603Z"}],"osv":[{"id":"CVE-2018-1000539","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:29:02.163Z","modified":"2026-10-20T10:49:39.876666851Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:07.192756Z"},{"id":"DEBIAN-CVE-2018-1000539","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:29:02.163Z","modified":"2026-10-23T18:02:55.881379303Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:29.988046Z"},{"id":"GHSA-mj4x-wcxf-hm8x","title":"Json-jwt did not verify the cryptographic signature for data","description":"The json-jwt rubygem version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-07-31T18:13:51Z","modified":"2024-02-16T08:20:39.365001Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:46:51.811331Z"},{"id":"UBUNTU-CVE-2018-1000539","description":"Nov json-jwt version \u003e= 0.5.0 \u0026\u0026 \u003c 1.9.4 contains a CWE-347: Improper Verification of Cryptographic Signature vulnerability in Decryption of AES-GCM encrypted JSON Web Tokens that can result in Attacker can forge a authentication tag. This attack appear to be exploitable via network connectivity. This vulnerability appears to have been fixed in 1.9.4 and later.","status":"published","published":"2018-06-26T16:29:00Z","modified":"2025-10-24T04:47:21Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:16.544091Z"},{"id":"DSA-4283-1","title":"ruby-json-jwt - security update","status":"published","published":"2018-08-31T00:00:00Z","modified":"2026-03-09T02:11:09.673233Z","updated_at":"2026-11-02T15:46:16.862196Z"}]}}