CVE-2026-4503: Unauthenticated Insecure Direct Object Reference (IDOR) Vulnerability in Langflow Desktop Image Download Endpoint

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-30 · updated 2026-10-26
Weakness: CWE-639

Description

IBM Langflow Desktop 1.0.0 through 1.8.4 Langflow could allow an unauthenticated user to view other users' images due to an indirect object reference through a user-controlled key.

Affected products

IBM Langflow Desktop: from 1.0.0 through 1.8.4

References

https://www.ibm.com/support/pages/node/7271099

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