{"id":"GHSA-f795-p5jw-j6g2","summary":"djust: SSE sessions are not bound to the authenticated user; the client-chosen session_id is the sole authorization capability (session hijack)","details":"### Impact\nSSE sessions were keyed solely by a **client-chosen** `session_id` with no binding to the authenticated user — a control the WebSocket transport has but that was dropped on SSE. An attacker who learns (or a victim who leaks) a `session_id` could connect to the message endpoint and dispatch event handlers that execute with the **victim's identity and state**.\n\n### Patches\nFixed in **djust 1.0.7**. Each SSE session is bound to its owning principal at creation and cross-principal access is rejected; SSE session creation is additionally capped per principal.\n\n### Workarounds\nDisable the SSE transport short of upgrading.","aliases":["CVE-2026-61592","PYSEC-2026-4043"],"modified":"2026-10-01T17:56:05.190087173Z","published":"2026-09-16T21:53:43Z","database_specific":{"cwe_ids":["CWE-384","CWE-639","CWE-862"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-09-16T21:53:43Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/djust-org/djust/security/advisories/GHSA-f795-p5jw-j6g2"},{"type":"PACKAGE","url":"https://github.com/djust-org/djust"},{"type":"WEB","url":"https://github.com/djust-org/djust/releases/tag/v1.0.7"}],"affected":[{"package":{"name":"djust","ecosystem":"PyPI","purl":"pkg:pypi/djust"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.7"}]}],"versions":["0.1.0","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.1.9","0.2.0","0.2.1","0.2.2","0.3.0","0.3.1","0.3.2","0.3.4","0.3.5","0.3.6","0.3.7","0.3.8","0.4.0","0.4.1","0.4.2","0.4.3","0.4.4","0.9.0","0.9.1","0.9.2","0.9.4","0.9.5","0.9.6","0.9.7","1.0.0","1.0.0rc1","1.0.0rc10","1.0.0rc11","1.0.0rc12","1.0.0rc13","1.0.0rc14","1.0.0rc15","1.0.0rc16","1.0.0rc17","1.0.0rc18","1.0.0rc2","1.0.0rc3","1.0.0rc4","1.0.0rc6","1.0.0rc7","1.0.0rc8","1.0.0rc9","1.0.1","1.0.1rc1","1.0.2","1.0.2rc1","1.0.2rc2","1.0.2rc3","1.0.3","1.0.3rc1","1.0.3rc2","1.0.4","1.0.4rc1","1.0.5","1.0.5rc1","1.0.5rc2","1.0.5rc3","1.0.5rc4","1.0.5rc5","1.0.6"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-f795-p5jw-j6g2/GHSA-f795-p5jw-j6g2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}