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HighVulnerabilityGHSA-w9x9-j56r-h98rupdated 29 Oct 2026, 16:36 UTC

Volto chatbot plugin lets anyone use its stored Danswer admin credentials

Anyone on the internet can send requests through this plugin, and it forwards them to the chatbot backend using the site's own stored login. Attackers can therefore act as the server's account, even admin-level functions.

Fixed in @eeacms/volto-chatbot 2.0.4Official source
SeverityHighCVSS 8.2 of 10
Being exploited?UnclearNo reports either way yet
Fix available?Yes@eeacms/volto-chatbot 2.0.4 · since 29 Oct 2026
How sure is this?Official sourceBacked by an official source

How the attack works simplified

  1. 1Anonymous attackerSends a plain web request, no login
  2. 2Volto proxy routeMatches any path under /_v1_da/
  3. 3Server credentials addedStored API key or session cookie attached
  4. 4Danswer API calledAny endpoint and method, including admin
  5. ResultAttacker acts as the service account

What happened

@eeacms/volto-chatbot's proxy route (**/_v1_da/**) forwards unauthenticated requests of any HTTP method and path to the upstream Danswer API, attaching the server's DANSWER_API_KEY or cached session cookie without any authorization check or path allowlist.

Why it is dangerous: An unauthenticated attacker can call arbitrary Danswer API endpoints, including privileged admin ones, with the configured service account's rights, potentially reading or changing chatbot data and configuration.

Are you affected?

You are affected if you run @eeacms/volto-chatbot version 2.0.3 or earlier with a configured DANSWER_URL and DANSWER_API_KEY or session login, exposing the Volto site to the network.

Package / productAffected versionsFixed in
@eeacms/volto-chatbot · npm<= 2.0.32.0.4

What to do

  1. Update @eeacms/volto-chatbot to 2.0.4 or later
  2. Rotate the DANSWER_API_KEY and session credentials used by the plugin
  3. Review Danswer logs for unexpected requests to admin endpoints

Timeline

  1. 29 Oct 2026, 16:35 UTC
    Publicly disclosed
  2. 29 Oct 2026, 16:35 UTC
    Reported by GitHub Advisory · GitHub Advisory
  3. 29 Oct 2026, 16:36 UTC
    Picked up by Zero Radar

Sources 1 report, oldest first

Official vendor, government CERT or advisory database

Technical details

ID
GHSA-w9x9-j56r-h98r
CVSS
8.2 / 10
Disclosed
29 Oct 2026, 16:35 UTC
On Zero Radar
29 Oct 2026, 16:36 UTC (1 min after disclosure)
Last change
29 Oct 2026, 16:36 UTC

The plain-language parts and the attack diagram were written by an AI model (anthropic/claude-haiku-5.5) from the sources above. Facts like versions, exploitation and dates come from the sources themselves. How Zero Radar works

Volto chatbot plugin lets anyone use its stored Danswer admin credentials · Zero Radar