EUVD-2026-38203
GHSA-fxq6-8jqq-rh9v
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local-only vector, low-privilege access required, no scope change; impact rated Low across CIA consistent with provided CVSS 4.0 VC:L/VI:L/VA:L ratings.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
1DescriptionCVE.org
A vulnerability was identified in langflow-ai langflow up to 1.9.3. This affects an unknown function of the component Bundle URL Loader. The manipulation leads to code injection. The attack needs to be performed locally. The vendor was contacted early about this disclosure but did not respond in any way.
AnalysisAI
Code injection in langflow's Bundle URL Loader component allows local attackers with low privileges to inject and execute arbitrary code within the langflow process across versions 1.9.0 through 1.9.3. A publicly available proof-of-concept demonstrating startup-time RCE via maliciously crafted bundle URLs has been published by the researcher, though the CVSS 4.0 vector (VC:L/VI:L/VA:L) rates impact as low - a discrepancy with the RCE claim in the PoC that warrants independent verification. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Local system access is required - network-based exploitation is explicitly ruled out by AV:L in the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 1.9 places this in the lowest risk tier, driven by a local-only attack vector (AV:L) and low privilege requirement (PR:L), which severely constrains the attack surface to users with existing local system access. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A low-privilege local user on a system running langflow 1.9.x submits a crafted bundle URL to the Bundle URL Loader component; during component startup or initialization, insufficient input validation causes the injected payload within the bundle to be parsed and executed in the langflow process context. A proof-of-concept demonstrating this technique is publicly available at https://github.com/dxz0069/softwareoverflow/blob/main/langflow_bundle_url_custom_component_startup_rce_vulndb.md, reducing the skill barrier for exploitation. |
| Remediation | No vendor-released patch is available at time of analysis - the vendor did not respond to the researcher's coordinated disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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