Missing Authorization Affecting chainlit package, versions [,2.10.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-PYTHON-CHAINLIT-17423203
- published23 Jun 2026
- disclosed22 Jun 2026
- creditTanguy Snoeck
Introduced: 22 Jun 2026
CVE-2026-56104 (opens in a new tab)How to fix?
Upgrade chainlit to version 2.10.1 or higher.
Overview
chainlit is a Build Conversational AI.
Affected versions of this package are vulnerable to Missing Authorization via the restore_existing_session path in the WebSocket session restoration. An attacker can gain unauthorized access to another user's session and assume their permissions and roles by presenting a valid sessionId without ownership verification.