EUVD-2026-94121
GHSA-wvwm-whv3-3f6j
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable, low-complexity RCE needing a low-privilege authenticated account (PR:L) and no interaction; code execution yields full C/I/A impact with no scope change.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote authenticated attacker to execute arbitrary code due to improper input validation.
AnalysisAI
Remote code execution in IBM Langflow OSS 1.0.0 through 1.12.2 lets a remote attacker who already holds a valid low-privilege session execute arbitrary code on the host by sending a crafted request that bypasses improper input validation. The flaw is network-reachable, low complexity, and requires no user interaction (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, 8.8), so the authentication requirement is the main barrier; deployments with open or self-service sign-up, internet exposure, or multi-tenant use carry the highest risk. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires a valid authenticated session with at least low-privilege access to the Langflow OSS instance (PR:L), after which a crafted request exploiting improper input validation achieves code execution; no user interaction is needed (UI:N) and the attack is network-reachable (AV:N) with low complexity (AC:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a credible, elevated-priority issue but not a drop-everything emergency. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the vendor fix for IBM Langflow OSS; the patch is available from IBM per the advisory at https://www.ibm.com/support/pages/node/7290694, and administrators should follow that page for the specific fixed build applicable to their 1.0.0-1.12.2 deployment, since the provided intelligence confirms a vendor patch exists but does not state an exact patched version number. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every instance of IBM Langflow OSS across the estate, confirm which deployments fall in the affected range 1.0.0 through 1.12.2, and identify any that are internet-facing, allow self-service registration, or serve multiple tenants; for those highest-risk instances, apply the vendor-released patch immediately or, if patching cannot be completed same-day, restrict network access to trusted users and disable open sign-up. …
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Same weakness CWE-693 – Protection Mechanism Failure
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External POC / Exploit Code
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