{"id":"CVE-2021-3818","aliases":["GHSA-cg3q-59w7-rvc2"],"url":"https://o3.security/vulnerability/CVE-2021-3818","summary":"Reliance on Cookies without Validation and Integrity Checking in getgrav/grav","details":"grav is vulnerable to Reliance on Cookies without Validation and Integrity Checking","published":"2021-09-27T13:15:07.777Z","modified":"2026-08-07T17:02:39.328876Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"epss":{"score":0.02452,"percentile":0.83059,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Packagist","name":"getgrav/grav","fixedVersion":"1.7.21"}],"fix":{"url":"https://github.com/getgrav/grav/commit/c51fb1779b83f620c0b6f3548d4a96322b55df07","label":"getgrav/grav@c51fb17"},"references":[{"type":"ADVISORY","url":"https://github.com/getgrav/grav/commit/c51fb1779b83f620c0b6f3548d4a96322b55df07"},{"type":"FIX","url":"https://huntr.dev/bounties/c2bc65af-7b93-4020-886e-8cdaeb0a58ea"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T17:02:39.328876Z"}}