{"id":"CVE-2021-3851","aliases":["GHSA-5fvx-5p2r-4mvp"],"url":"https://o3.security/vulnerability/CVE-2021-3851","summary":"Open Redirect in firefly-iii","details":"firefly-iii is vulnerable to URL Redirection to Untrusted Site","published":"2021-10-19T13:15:11.620Z","modified":"2026-07-09T00:36:28.196481Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":{"score":0.00571,"percentile":0.44476,"asOf":"2026-08-17"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"grumpydictator/firefly-iii","fixedVersion":"5.6.2"}],"fix":{"url":"https://github.com/firefly-iii/firefly-iii/commit/8662dfa4c0f71efef61c31dc015c6f723db8318d","label":"firefly-iii/firefly-iii@8662dfa"},"references":[{"type":"FIX","url":"https://github.com/firefly-iii/firefly-iii/commit/8662dfa4c0f71efef61c31dc015c6f723db8318d"},{"type":"FIX","url":"https://huntr.dev/bounties/549a1040-9b5e-420b-9b80-20700dd9d592"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:36:28.196481Z"}}