EUVD-2026-75777
GHSA-2fpx-w7mw-jhxj
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Network-accessible API requires only a low-privilege API key; no user interaction; High confidentiality and integrity from unrestricted workflow execution and data access post-deactivation.
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 flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.
AnalysisAI
Persistent API key access in IBM Langflow OSS 1.0.0-1.11.5 allows authenticated remote attackers to continue executing AI workflows and extracting sensitive data even after their user accounts have been deactivated. The vulnerability stems from insufficient session expiration (CWE-613): API keys issued to users are not invalidated when those accounts are disabled, leaving a persistent backdoor for former users or compromised credentials. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to possess a valid Langflow API key that was issued while their account was active and that has not been manually revoked after account deactivation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 8.1 score (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N) reflects a realistic and credible threat model: any user who possesses a previously issued API key retains full workflow execution capability after being offboarded, with no additional technical effort required. … 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 | Consult the IBM advisory at https://www.ibm.com/support/pages/node/7286662 for the exact patched release and apply it immediately, as no specific fixed version number is confirmed in the available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, audit all API keys and immediately revoke credentials associated with any deactivated user accounts; document the timeframe each deactivation occurred to assess potential unauthorized access. …
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Same weakness CWE-613 – Insufficient Session Expiration
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External POC / Exploit Code
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