{"cve":"CVE-2026-61589","nvd":{"published":"2026-09-16T23:16:53.717","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 WebSocket `handle_mount` and `ViewRuntime._build_request` rebuild an `HttpRequest` via `RequestFactory().get(...)` with no `HTTP_HOST`, so `request.get_host()` defaulted to `\"testserver\"` on the live path. Host/subdomain/domain `TenantResolver`s then misresolved the tenant — `None` on the live path while the HTTP path resolved correctly. With `STRICT_MODE=False` the tenant-scoped managers returned unscoped rows (cross-tenant disclosure); with the default they returned an empty queryset (broken tenancy). This is fixed in djust 1.0.7. The handshake Host is extracted from the ASGI scope, validated against `ALLOWED_HOSTS` (the same logic as the CSWSH Origin gate, parsed with Django's `split_domain_port` so malformed Hosts are rejected at the boundary), and propagated — with the TLS scheme — into the reconstructed request, so live-path tenant resolution matches HTTP exactly. There is no known workaround on the live path short of upgrading. Users are most exposed when combined with `STRICT_MODE=False`.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","score":6.3},"cwes":["CWE-348","CWE-639"],"references":["https://github.com/djust-org/djust/releases/tag/v1.0.7","https://github.com/djust-org/djust/security/advisories/GHSA-v9rj-xjfv-xj9r"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:54:41.405518556+00:00"},"epss":{"cve":"CVE-2026-61589","score":0.00178,"percentile":0.07299,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-v9rj-xjfv-xj9r","url":"https://osv.dev/vulnerability/GHSA-v9rj-xjfv-xj9r","summary":"djust: WebSocket/runtime reconstructed request omits the client Host, causing host/subdomain TenantResolvers to misresolve the tenant on the live path","modified":"2026-10-01T17:56:18.051850165Z","packages":[{"ecosystem":"PyPI","name":"djust","purl":"pkg:pypi/djust","ranges":["<1.0.7"],"fixed":["1.0.7"]}]},{"id":"PYSEC-2026-4046","url":"https://osv.dev/vulnerability/PYSEC-2026-4046","summary":"djust: WebSocket/runtime reconstructed request omits the client Host, causing host/subdomain TenantResolvers to misresolve the tenant on the live path","modified":"2026-10-01T17:45:04.652156704Z","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."]}