EUVD-2026-94126
GHSA-p2rj-wm8g-5h9f
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-reachable scanner endpoint reachable by any authenticated user gives AV:N/AC:L/PR:L/UI:N; blocklist bypass yields full code execution, so C/I/A all High.
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 attacker to execute arbitrary code due to an incomplete blocklist in the code security scanner.
AnalysisAI
Authenticated remote code execution affects IBM Langflow OSS versions 1.0.0 through 1.12.2, where an incomplete blocklist in the built-in code security scanner can be bypassed to execute arbitrary code on the server. Exploitation requires a valid low-privilege account (CVSS PR:L) and the ability to submit code evaluated by the scanner; unauthenticated attackers are not sufficient. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires an authenticated low-privilege account (CVSS PR:L) on an IBM Langflow OSS instance running an affected version (1.0.0 through 1.12.2), plus the ability to submit code that is evaluated by the built-in code security scanner. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, base 8.8) indicates a network-reachable flaw of low attack complexity requiring low privileges (PR:L, i.e. … 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-released fix referenced in the IBM advisory at https://www.ibm.com/support/pages/node/7290694 - IBM lists a patch as available, and affected installations on 1.0.0 through 1.12.2 should be upgraded to the fixed release identified there; no exact fix version is independently confirmed in the available data, so verify the target version against the advisory before declaring remediation complete. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all IBM Langflow OSS instances at versions 1.0.0 through 1.12.2, identify internet-facing or multi-tenant deployments, and restrict access or disable self-registration for untrusted users until remediation is complete. …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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