Vulnerability · Published Jun 5, 2026 · Assigned by VulDB
CVE-2026-11329onnx onnx-mlir Placeholder Node Cache backend.py generate_hash_key weak hash
Low 3.6
In plain English
A low-severity broken cryptography in onnx-mlir from onnx. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).
Official description
A vulnerability has been found in onnx onnx-mlir up to 0.5.0.0. Affected by this issue is the function generate_hash_key of the file src/Runtime/python/torch_onnxmlir/src/torch_onnxmlir/backend.py of the component Placeholder Node Cache Handler. Such manipulation leads to use of weak hash. An attack has to be approached locally. A high complexity level is associated with this attack. The exploitation is known to be difficult. The name of the patch is 72c5187ff6d13c2c2b3d3789b8f5faf99f08a5b4. Applying a patch is advised to resolve this issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | onnx | no fix listed | UBUNTU-CVE-2026-11329 |
| Ubuntu:25.10 | onnx | no fix listed | UBUNTU-CVE-2026-11329 |
| Ubuntu:26.04:LTS | onnx | no fix listed | UBUNTU-CVE-2026-11329 |
Affected products (as reported)
Weakness: CWE-328, CWE-327 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C
References
- VDB-368865 | onnx onnx-mlir Placeholder Node Cache backend.py generate_hash_key weak hash vdb-entry, technical-description
- VDB-368865 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- CVE-2026-11329 | CVE Analysis and Report third-party-advisory
- Submit #832358 | onnx onnx-mlir v0.5.0.0 cache key collision third-party-advisory
- https://github.com/onnx/onnx-mlir/pull/3427 issue-tracking, patch
- https://github.com/onnx/onnx-mlir/commit/72c5187ff6d13c2c2b3d3789b8f5faf99f08a5b4 patch
- https://github.com/onnx/onnx-mlir/ product