Vulnerability Intelligence Report
Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
CVE-2026-10561
IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise
No Active Exploit Signals
CVSS Base Score
10.0
CRITICAL
Exploitability:3.9
Impact Score:6.1
EPSS Probability:0.53%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-94 ↗CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| IBM | Langflow OSS | 1.0.0 <= 1.9.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.529%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | IBM Corporation · Vendor · USA |
| Reserved | 2026-06-01T15:41:38 |
| Published | 2026-06-22T13:22:07 |
| Last Updated | 2026-06-23T18:48:33 |
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