CVE-2026-18904: IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthori
Summary
IBM Langflow OSS (open-source software) versions 1.0.0 through 1.11.1 has a security flaw where a namespace collision (a situation where two different things accidentally share the same name or identifier) between user identifiers allows attackers to steal sensitive information and insert unauthorized messages into the system.
Vulnerability Details
8.2(high)
EPSS: 0.0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
network
low
none
none
August 28, 2026
Classification
Taxonomy References
Affected Vendors
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Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-18904
First tracked: August 28, 2026 at 08:08 PM
Classified by LLM (prompt v3) · confidence: 92%