IBMCVE-2026-10547
IBM Langflow OSS: denial of service
Medium5.9CVE-2026-10547 · Published Aug 5, 2026 · updated Aug 6, 2026
IBM Langflow OSS 1.0.0 through 1.10.3 does not properly validate ownership in the deprecated POST /api/v1/build/{flow_id}/vertices endpoint, allowing an authenticated user to inject arbitrary graph data into a shared cache for any flow. This may result in cross-user cache pollution, unauthorized workflow execution, or denial of service.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Langflow OSS Product | >= 1.0.0, <= 1.10.3 | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-284
More IBM advisories
All IBM| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Aug 5 | IBM Langflow OSS: weak cryptography | High7.4 | No fix yet |
| Aug 5 | IBM Langflow OSS: code injection | High8.1 | No fix yet |
| Aug 5 | IBM Langflow OSS: code execution | High8.8 | No fix yet |
| Aug 5 | IBM Langflow OSS: information disclosure | High7.1 | No fix yet |
| Aug 5 | IBM Langflow OSS: code injection | High8.8 | No fix yet |
| Aug 5 | IBM Langflow OSS: broken cryptography | High7.4 | No fix yet |