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Authenticated remote code execution in IBM Langflow OSS
CVE-2026-104335 is an improper access control vulnerability affecting IBM Langflow OSS versions 1.0.0 through 1.12.2. A remote authenticated attacker could exploit the flaw to execute arbitrary code on the affected system. The specific vulnerable function and access-control failure are not identified.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation could allow arbitrary code execution on the affected IBM Langflow OSS system. The execution privileges and further consequences are not specified.
If you can’t patch tonight, do this now.
No temporary workaround or mitigation is documented.
Patch, then assume compromise.
Upgrade IBM Langflow OSS to version 1.12.3 or later, following IBM's security bulletin remediation instructions.
1 exploit validated by Mallory's analysis.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.