EUVD-2026-67955
GHSA-rw3m-jm6r-xjcf
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Network-exposed, no auth required (PR:N), low complexity namespace collision; high confidentiality loss, limited integrity impact via message injection, no availability effect.
Primary rating from Vendor (ibm).
CVSS VectorNVD
Lifecycle Timeline
2DescriptionNVD
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.
AnalysisAI
Namespace collision between user identifiers in IBM Langflow OSS 1.0.0 through 1.11.1 exposes sensitive information and enables unauthorized message injection by unauthenticated remote attackers. The flaw, rooted in CWE-639 (authorization bypass via user-controlled key), allows an attacker to resolve or collide with another user's namespace without requiring authentication, as confirmed by the CVSS vector (PR:N). …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions required for network-level access - the CVSS vector (AV:N/AC:L/PR:N/UI:N) confirms remote unauthenticated exploitation against IBM Langflow OSS 1.0.0 through 1.11.1 without any prerequisite configuration. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.2 (High) is driven by a fully unauthenticated, low-complexity, network-accessible attack path with high confidentiality impact - a genuinely severe profile. … 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 patch per IBM's advisory at https://www.ibm.com/support/pages/node/7284579 - the specific fixed version is not independently confirmed from the available data beyond 'patch available,' so administrators should consult the advisory directly to identify the target upgrade version. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, conduct a complete inventory of all Langflow OSS deployments and identify systems running versions 1.0.0 through 1.11.1. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
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External POC / Exploit Code
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