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CVE-2026-61599
djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, the djust live transport resolves the LiveView to mount from a client-supplied dotted path by calling __import__(module_path, ...). The module is imported — running its top-level code (import side effects) — before the framework checks that the resolved object is a LiveView subclass and before any per-view authentication. The LIVEVIEW_ALLOWED_MODULES allowlist that should contain this is fail-open (if allowed_modules: — skipped when the setting is unset, the framework default) and uses loose startswith matching. An unauthenticated WebSocket client (the WS handshake does not require auth; per-view auth runs only after import + instantiate) can therefore send a mount / live_redirect_mount / url_change frame (or an SSE mount) with view = "<any.importable.module>.AnyName" and cause the server to import — and execute the top-level code of — any importable Python module by name. Version 1.0.7 fixes the issue with a fail-closed resolution gate (djust._view_resolution.is_view_import_allowed): a client view path resolves only if (a) its module is already loaded (sys.modules — so resolving runs no new code; URL-routed views loaded by URLconf at startup keep working with zero config) or (b) it matches LIVEVIEW_ALLOWED_MODULES on a module-segment boundary (explicit opt-in for lazily-imported views). The gate runs before __import__ at all three sinks (+ defense-in-depth inside _instantiate_view). As a workaround, set LIVEVIEW_ALLOWED_MODULES to the narrow list of modules that contain your mountable LiveView classes. (Note: pre-patch the allowlist is startswith-matched and the import still precedes the subclass check, so this is mitigation, not a complete fix.)
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The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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