EUVD-2026-75792
GHSA-g64v-m7wp-6r42
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Network-accessible with low complexity post-authentication (PR:L); incomplete blocklist bypass yields full RCE with no scope change.
Primary rating from Vendor (ibm).
CVSS VectorVendor: ibm
Lifecycle Timeline
2DescriptionCVE.org
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code due to an incomplete environment variable blocklist.
AnalysisAI
Remote code execution in IBM Langflow OSS versions 1.0.0 through 1.11.5 allows authenticated low-privileged users to execute arbitrary server-side code by exploiting an incomplete environment variable blocklist. The root cause (CWE-94, Code Injection) means the platform's intended restrictions on environment variable access can be circumvented by supplying references to variables omitted from the blocklist, resulting in full confidentiality, integrity, and availability compromise. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated account on the IBM Langflow OSS instance with at minimum low-privilege access (CVSS PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.8 score accurately reflects the post-authentication severity: the attack is network-accessible, low-complexity, and requires only low-privilege credentials before achieving full C:H/I:H/A:H impact. … 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 IBM Langflow OSS to a patched version as directed by the IBM advisory at https://www.ibm.com/support/pages/node/7286666 - the exact fixed version must be confirmed from that advisory, as the available data only specifies the vulnerable range through 1.11.5. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all systems running IBM Langflow OSS and identify which are running versions 1.0.0 through 1.11.5. …
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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