{"cve":"CVE-2026-61593","nvd":{"published":"2026-09-16T16:17:13.943","modified":"2026-09-30T17:51:56.193","status":"Deferred","description":"djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, the SSE client→server POST endpoints are `@csrf_exempt` and the SSE GET stream endpoint had no Origin check, so a cross-origin page could drive a victim-cookie-authenticated SSE session: force the victim's browser to GET the stream URL (which creates and mounts a LiveView as the victim) and POST to the message endpoint with `credentials: include` to fire state-changing event handlers as the victim. The URL `session_id` is client-chosen (validated only for UUID *format*), so it is not a CSRF token, and a JSON body sent as `text/plain` is a CORS simple request with no preflight. The issue is fixed in 1.0.7. All three SSE endpoints validate the request `Origin` against `ALLOWED_HOSTS` (mirroring the WebSocket CSWSH defense) and reject cross-origin requests with 403; the POST endpoints additionally require `Content-Type: application/json` (415 otherwise), closing the `text/plain` simple-request bypass. As a workaround, disable the SSE transport, or front it with a proxy that enforces an Origin allowlist.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N","score":8.1},"cwes":["CWE-352"],"references":["https://github.com/djust-org/djust/releases/tag/v1.0.7","https://github.com/djust-org/djust/security/advisories/GHSA-pg97-jvmf-qfvc"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-61593","score":0.00209,"percentile":0.11038,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-pg97-jvmf-qfvc","url":"https://osv.dev/vulnerability/GHSA-pg97-jvmf-qfvc","summary":"djust has Cross-Site Request Forgery on the Server-Sent-Events transport: a cross-origin page can drive a victim-authenticated SSE session","modified":"2026-10-01T17:55:46.544728499Z","packages":[{"ecosystem":"PyPI","name":"djust","purl":"pkg:pypi/djust","ranges":["<1.0.7"],"fixed":["1.0.7"]}]},{"id":"PYSEC-2026-4044","url":"https://osv.dev/vulnerability/PYSEC-2026-4044","summary":"djust has Cross-Site Request Forgery on the Server-Sent-Events transport: a cross-origin page can drive a victim-authenticated SSE session","modified":"2026-10-01T17:45:02.036155048Z","packages":[{"ecosystem":"PyPI","name":"djust","purl":"pkg:pypi/djust","ranges":["<1.0.7"],"fixed":["1.0.7"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}