IBMCVE-2026-76059
IBM Langflow OSS: protection mechanism failure
High8.8CVE-2026-76059 · Published Sep 10, 2026 · updated Sep 16, 2026
IBM Langflow OSS 1.0.0 through 1.11.5 An attacker who could submit custom component source code could bypass the static security scanner by crafting an annotated class-body assignment that resolved to a dangerous callable through alias tracking; the resolved value was never checked against the dangerous callable blocklist due to the logic error. If the crafted component reached the runtime execution path, the attacker could cause arbitrary operating system commands to execute on the server in-process, with the privileges of the running service.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Langflow OSS Product | >= 1.0.0, <= 1.11.5 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-693
More IBM advisories
All IBM| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Sep 10 | IBM DataStage on Cloud Pak for Data: denial of service | Critical9.6 | No fix yet |
| Sep 10 | IBM DataStage on Cloud Pak for Data: information disclosure | Critical9.6 | No fix yet |
| Sep 10 | IBM Langflow OSS: remote code execution | High8.8 | No fix yet |
| Sep 10 | IBM Db2: path traversal | Medium4.3 | No fix yet |
| Sep 10 | IBM Db2: code execution | High7.5 | No fix yet |
| Sep 10 | IBM Db2: denial of service | High8.1 | No fix yet |