{"id":"CVE-2014-4994","aliases":["EUVD-2018-0153","GHSA-6x45-86q6-rcmr"],"status":"published","title":"Gyazo allows local users to write arbitrary files","description":"lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","severity":{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00477,"percentile":0.4146,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2018-01-10T18:00:00Z","modified":"2026-06-17T00:10:53Z","fixes":[{"ecosystem":"RubyGems","package":"gyazo","fixed_in":["2.0.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"gyazo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"last_affected":"1.0.0"},{"fixed":"2.0.0"}]}],"versions":["1.0.0"]},{"source":"osv","ecosystem":"RubyGems","package":"gyazo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"2.0.0"}]}],"versions":["1.0.0"]}],"products":[{"vendor":"gyazo_project","product":"gyazo"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2014/07/17/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2014/07/07/13","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","web"]},{"url":"http://www.vapid.dhs.org/advisories/gyazo-1.0.0.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2014-4994","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/gyazo/CVE-2014-4994.yml","tags":["web"]},{"url":"https://web.archive.org/web/20200229061943/http://www.vapid.dhs.org/advisories/gyazo-1.0.0.html","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6x45-86q6-rcmr"},{"url":"https://github.com/gyazo/gyazo-ruby","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2014-4994","description":"lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","status":"published","published":"2018-01-10T18:00:00Z","modified":"2024-08-06T11:34:37.302Z","updated_at":"2026-11-02T14:33:45.263043Z"}],"euvd":[{"id":"EUVD-2018-0153","description":"lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","status":"published","published":"2018-01-10T18:00:00Z","modified":"2024-08-06T11:34:37Z","updated_at":"2026-11-03T01:57:03.789124Z"}],"ghsa":[{"id":"GHSA-6x45-86q6-rcmr","title":"Gyazo allows local users to write arbitrary files","description":"`lib/gyazo/client.rb` in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","status":"published","published":"2018-01-22T23:17:39Z","modified":"2023-09-05T21:32:13Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:37:02.095916Z"}],"nvd":[{"id":"CVE-2014-4994","description":"lib/gyazo/client.rb in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","status":"published","published":"2018-01-10T18:29:00.37Z","modified":"2026-06-17T00:10:53.217Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:02:59.001778Z"}],"osv":[{"id":"GHSA-6x45-86q6-rcmr","title":"Gyazo allows local users to write arbitrary files","description":"`lib/gyazo/client.rb` in the gyazo gem 1.0.0 for Ruby allows local users to write to arbitrary files via a symlink attack on a temporary file, related to time-based filenames.","status":"published","published":"2018-01-22T23:17:39Z","modified":"2023-11-08T03:57:42.589808Z","cvss":[{"version":"3.0","score":5.5,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:46:40.308826Z"}]}}