{"cve":"CVE-2026-55571","nvd":{"published":"2026-08-25T17:17:32.547","modified":"2026-09-09T21:07:31.353","status":"Deferred","description":"djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to 1.0.4, LiveViewConsumer.handle_mount sends a `{\"type\":\"navigate\",\"to\":...}` frame when login_required, permission_required, or a redirecting on_mount hook denies a LiveView mount, but returns without closing the WebSocket or clearing self.view_instance. A browser follows the redirect, but a raw WebSocket client can ignore it and retain the mounted socket. Because LiveViewConsumer.handle_event does not recheck authentication or authorization, the client can send `{\"type\":\"event\",...}` frames that invoke @event_handler methods without an authenticated session, including through handle_live_redirect_mount, enabling unauthorized sensitive reads or mutations. This issue is fixed in version 1.0.4.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":8.2},"cwes":["CWE-285","CWE-306"],"references":["https://github.com/djust-org/djust/commit/1ae8aa9246b80477de7ddc4d90319a3b267bef04","https://github.com/djust-org/djust/pull/1780","https://github.com/djust-org/djust/releases/tag/v1.0.4","https://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247","https://github.com/djust-org/djust/security/advisories/GHSA-xx4j-w367-7247"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-55571","score":0.00505,"percentile":0.43176,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-xx4j-w367-7247","url":"https://osv.dev/vulnerability/GHSA-xx4j-w367-7247","summary":"djust authentication bypass: a login_required / on_mount LiveView mount redirect does not close the WebSocket, allowing an unauthenticated client to dispatch event-handler calls","modified":"2026-09-10T12:25:27.409576998Z","packages":[{"ecosystem":"PyPI","name":"djust","purl":"pkg:pypi/djust","ranges":["<1.0.4"],"fixed":["1.0.4"]}]},{"id":"PYSEC-2026-3829","url":"https://osv.dev/vulnerability/PYSEC-2026-3829","summary":"djust authentication bypass: a login_required / on_mount LiveView mount redirect does not close the WebSocket, allowing an unauthenticated client to dispatch event-handler calls","modified":"2026-09-10T12:15:05.059650984Z","packages":[{"ecosystem":"PyPI","name":"djust","purl":"pkg:pypi/djust","ranges":["<1.0.4"],"fixed":["1.0.4"]}]}],"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."]}