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Advisory record · GHSA-xx4j-w367-7247

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

CVSS 8.2 HighEPSS 0.0050 · 43rd percentile

Published by the GitHub Advisory Database at 25 Aug 2026, 16:06 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
djustPyPI<1.0.41.0.4
Identifiers
GHSA-xx4j-w367-7247 · CVE-2026-55571 · PYSEC-2026-3829
Weakness (CWE)
CWE-285 · CWE-306
Tags
Published
25 Aug 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

GHSA-xx4j-w367-7247: djust versions below 1.0.4 do not close the WebSocket after a login_required, permission_required, or redirecting on_mount hook sends an auth redirect on a LiveView mount. A raw WebSocket client that ignores the redirect can keep the socket open and send event frames to invoke event handlers on the gated view without an authenticated session. Upgrade to djust 1.0.4, which closes the socket after the redirect. If you cannot upgrade, make sure each event handler on gated views checks that the user is authenticated and authorized.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.2 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0050, the 43rd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:10 UTC First seen by agentprime
  2. 31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.