{"id":"GHSA-vj2p-7pgw-g2wf","aliases":[],"url":"https://o3.security/vulnerability/GHSA-vj2p-7pgw-g2wf","summary":"Postiz App has a High-Severity SSRF Vulnerability via Next.js","details":"### Impact\nA successful SSRF attack allows an attacker to:\n- Bypass firewalls to scan and interact with internal network services/ports.\n- Access sensitive cloud metadata services (e.g., AWS IMDS 169.254.169.254) to potentially leak instance credentials.\n- Pivot into the internal network environment where Postiz is hosted.\n\n### Workarounds\nThere are no workarounds known to this, please upgrade to Postiz version `v2.21.1`.","published":"2026-03-27T15:46:53Z","modified":"2026-03-27T16:04:59.024811Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"postiz","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/gitroomhq/postiz-app/security/advisories/GHSA-vj2p-7pgw-g2wf"},{"type":"WEB","url":"https://github.com/vercel/next.js/security/advisories/GHSA-fr5h-rqp8-mj6g"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-34351"},{"type":"PACKAGE","url":"https://github.com/gitroomhq/postiz-app"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-27T16:04:59.024811Z"}}