EUVD-2026-53576
GHSA-xhf7-92wh-rvrx
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible submission requires only low-privileged auth; AST bypass yields arbitrary code execution warranting C:H/I:H/A:H with no scope change.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionCVE.org
IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to improper validation of Python code during AST-based security scanning.
AnalysisAI
Remote code execution in IBM Langflow OSS 1.0.0-1.10.3 allows authenticated remote attackers to inject and execute arbitrary Python code by crafting payloads that evade the platform's AST-based security scanning mechanism. The flaw (CWE-94, Code Injection) is particularly insidious because the defensive AST validation layer gives a false sense of protection while silently passing malicious constructs to the Python runtime. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session with at least low-privileged access to the IBM Langflow OSS instance, as confirmed by CVSS PR:L. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H scores 8.8 (High), reflecting a network-accessible, low-complexity attack requiring only low-privileged authentication with no user interaction and full impact across all three security properties. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated attacker with a low-privileged Langflow account crafts a Python payload using constructs designed to evade AST-based detection - such as indirect attribute access via getattr, dynamically assembled strings passed to exec, or import bypasses through __import__ - and submits it through the platform's workflow component interface. The defective AST scanner passes the payload as benign, and the Python runtime executes it with the privileges of the Langflow process. … |
| Remediation | Apply the vendor-released patch confirmed available via IBM Security Advisory at https://www.ibm.com/support/pages/node/7282646. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all systems running IBM Langflow OSS 1.0.0-1.10.3 and determine exposure status (internet-facing, multi-tenant, isolated). …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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