CVE-2026-6542
Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.
| CWE | CWE-639 |
| Vendor | ibm |
| Product | langflow oss |
| Published | Apr 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
IBM / Langflow OSS
1.0.0 ≤ 1.8.4