Out-of-bounds read in onnx - CVE-2026-115919
Published: November 10, 2026
Vulnerability identifier: #VU164357
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-115919
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by terminating an application performing ONNX shape inference.
The vulnerability exists due to an out-of-bounds read caused by missing input-rank validation in RNNShapeInference_opset1_to_6() when processing RNN or LSTM nodes from opsets 1–6 or GRU nodes from opsets 3–6. A remote attacker can supply a crafted model with an undersized first-input shape to crash an application calling onnx.shape_inference.infer_shapes().
Affected software
onnx
How to mitigate CVE-2026-115919
Install security update from vendor's website.
onnx - update to 1.22.0