CVE-2026-6542

MEDIUM

Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id

Title source: cna
STIX 2.1

Description

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.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
https://www.ibm.com/support/pages/node/7270886

Scores

CVSS v3 6.5
EPSS 0.0020
EPSS Percentile 10.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (2)
IBM/Langflow OSS 1.0.0 - 1.8.4
langflow/langflow 1.0.0 - 1.9.0
Published Apr 30, 2026
Tracked Since May 01, 2026