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CVSS 6.5 · MEDIUM

CVE-2026-6542

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.

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Severity

Score: 6.5(MEDIUM)
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
AV: NETWORK
AC: LOW
PR: LOW
UI: NONE
S: UNCHANGED
C: HIGH
I: NONE
A: NONE
Weakness (CWE): CWE-639

EPSS

Probability of exploitation (next 30 days): 0.0003 (0.0%)
Percentile: 8.0%
EPSS: 2026-05-06

Affects

langflow:langflow

Technical 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.

Published: 4/30/2026, 10:16:26 PM
Last modified: 5/4/2026, 6:21:23 PM

References

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