{"id":"CVE-2021-33564","details":"An argument injection vulnerability in the Dragonfly gem before 1.4.0 for Ruby allows remote attackers to read and write to arbitrary files via a crafted URL when the verify_url option is disabled. This may lead to code execution. The problem occurs because the generate and process features mishandle use of the ImageMagick convert utility.","aliases":["GHSA-j858-xp5v-f8xx"],"modified":"2026-07-08T22:14:02.570529Z","published":"2021-05-29T14:15:08.510Z","references":[{"type":"REPORT","url":"https://github.com/markevans/dragonfly/issues/513"},{"type":"FIX","url":"https://github.com/markevans/dragonfly/commit/25399297bb457f7fcf8e3f91e85945b255b111b5"},{"type":"FIX","url":"https://github.com/markevans/dragonfly/compare/v1.3.0...v1.4.0"},{"type":"EVIDENCE","url":"https://github.com/mlr0p/CVE-2021-33564"},{"type":"EVIDENCE","url":"https://raw.githubusercontent.com/projectdiscovery/nuclei-templates/master/cves/2021/CVE-2021-33564.yaml"},{"type":"EVIDENCE","url":"https://zxsecurity.co.nz/research/argunment-injection-ruby-dragonfly/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/markevans/dragonfly","events":[{"introduced":"0"},{"fixed":"35e88d14987bf425dcace67f9b100d9a23cae904"},{"fixed":"25399297bb457f7fcf8e3f91e85945b255b111b5"}],"database_specific":{"cpe":"cpe:2.3:a:dragonfly_project:dragonfly:*:*:*:*:*:ruby:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.4.0"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v1.3.0","v1.2.1","v1.2.0","v1.1.5","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.12","v1.0.11","v1.0.10","v1.0.9","v1.0.8","v1.0.7","v1.0.6","v1.0.5","v1.0.4","v1.0.3","v1.0.2","v1.0.1","v1.0.0","v0.9.15","v0.9.14","v0.9.13","security_fix","v0.9.12","v0.9.11","v0.9.10","v0.9.9","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.8.3","v0.8.2","v0.8.1","v0.8.0","v0.7.7","v0.7.6","v0.7.5","v0.7.4","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.6.2","v0.6.1","v0.6.0","v0.5.7","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.8","v0.3.7","v0.3.6","v0.3.5","v0.3.4","v0.3.3","v0.3.2","v0.3.0","v0.2.1","v0.2.0","v0.1.6","v0.1.5","v0.1.4","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33564.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}