Authorization Bypass Through User-Controlled Key Affecting langflow-base package, versions [,0.4.0)
Threat Intelligence
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
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-LANGFLOWBASE-17400349
- published22 Jun 2026
- disclosed19 Jun 2026
- credityzeirnials, LeftenantZero, Erdembileg Ariunbold
Introduced: 19 Jun 2026
CVE-2026-55255 (opens in a new tab)How to fix?
Upgrade langflow-base to version 0.4.0 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key via the get_flow_by_id_or_endpoint_name function. An attacker can access and execute flows belonging to other users, potentially exposing sensitive data and consuming resources, by specifying the victim's flow ID in API requests.