EUVD-2026-67956
GHSA-8ffw-jjx8-5788
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Public unauthenticated network endpoint with no user interaction and low complexity yields PR:N/UI:N/AC:L; code execution gives full C:H/I:H/A:H on the host.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary code due to improper enforcement of security restrictions on the A2A public endpoint.
AnalysisAI
Remote code execution in IBM Langflow OSS 1.0.0 through 1.11.1 arises from the A2A (agent-to-agent) public endpoint failing to properly enforce security restrictions, letting a network attacker inject and run arbitrary code on the host. The CWE-94 code-injection flaw carries a critical 9.8 CVSS score with a network, no-privilege, no-interaction vector, meaning any reachable instance is directly at risk. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires network access to the Langflow A2A public endpoint on an affected instance (versions 1.0.0-1.11.1); per the description, the flaw is improper enforcement of security restrictions on that specific endpoint, so the A2A endpoint must be present and reachable from the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine high-priority issue rather than an inflated CVSS number: the CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N) describes unauthenticated, low-complexity, network-reachable exploitation with full compromise of confidentiality, integrity, and availability (C:H/I:H/A:H), and the flaw sits on a public endpoint that is designed to be exposed. … 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 | Upgrade to the fixed release identified in IBM's security bulletin (https://www.ibm.com/support/pages/node/7284733); the provided data confirms a vendor patch is available but does not state the exact fixed version, so obtain the precise target build from that advisory before deploying. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all IBM Langflow OSS instances running versions 1.0.0 through 1.11.1 across production and non-production environments and immediately restrict network access to the A2A endpoint through firewall or network segmentation. …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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