onnx has 13 CVEs on record between 2024 and 2026. Disclosure cadence is accelerating: 6 in the last 90 days against 1 in the 90 before. The busiest recent month was October 2026 with 4. The median CVSS is 6.2 (medium). None have a confirmed exploitation report. The most common weakness class is CWE-125 (3).
CVEs per month
Last 12 months, by publish date
- Exploited share
- 0% vs 1% corpus
- Median CVSS
- 6.2
- Publish → KEV
- —
- Last 90 days
- 6 prev 1
Worst active — by depth score
CVE-2026-28500High· 8.6ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack47CVE-2026-27489Highonnx Vulnerable to Path Traversal via Symlink41CVE-2024-27318High· 7.5Onnx Directory Traversal vulnerability41GHSA-486p-g8x4-77mgMedium· 7.1Duplicate Advisory: ONNX: TOCTOU arbitrary file read/write in save_external_dat 39CVE-2026-115922Medium· 6.2ONNX: Denial of service via unchecked expansion of packed sub-byte tensors in ONNX Python APIs34
onnx vulnerabilities
CVEs affecting onnx, newest first. Open any entry for full detail, references, and exploit status.
13 CVEsRSS
CVE-2026-115919Medium· 6.2ONNX: Out-of-Bounds Read in RNN/GRU/LSTM Shape Inference (Old Opsets, Missing Rank Check)
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to 1.22.0, RNNShapeInference_opset1_to_6() processes malformed RNN and LSTM nodes from opsets 1 through 6 and GRU nodes from opsets 3 th…
CVE-2026-115921Medium· 6.2ONNX: Null Pointer Dereference in ScanInferenceFunction Due to Missing Required Attribute
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.4.0 until 1.22.0, ScanInferenceFunction, ScanInferenceFunction_opset8, and ScanInferenceFunction_opset9 do not safely validate the requ…
CVE-2026-115920Medium· 6.2ONNX: Out-of-bounds read in ConvTranspose shape inference via undersized weight rank
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.2.1 until 1.22.0, ConvTranspose shape inference processes a weight tensor with fewer than three dimensions without a kernel_shape attri…
CVE-2026-115922Medium· 6.2ONNX: Denial of service via unchecked expansion of packed sub-byte tensors in ONNX Python APIs
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to 1.22.0, _unpack_2bit() and _unpack_4bit() resize unpacked arrays according to attacker-controlled TensorProto.dims without verifying …
GHSA-486p-g8x4-77mgMedium· 7.1Duplicate Advisory: ONNX: TOCTOU arbitrary file read/write in save_external_dat
Duplicate Advisory: ONNX: TOCTOU arbitrary file read/write in save_external_dat
CVE-2026-63632Low· 3.3Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. From 1.3.0 until 1.22.0, onnx.version_converter.convert_version() can perform an out-of-bounds read in Gemm_7_6::adapt_gemm_7_6() in onnx/vers…
CVE-2026-44512Medium· 5.5ONNX has Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)
ONNX has Null Pointer Dereference in Upsample Version Converter Adapter (Zero Inputs)
CVE-2026-34447Medium· 5.5ONNX: External Data Symlink Traversal
ONNX: External Data Symlink Traversal
CVE-2026-34446Medium· 4.7ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load
ONNX: Arbitrary File Read via ExternalData Hardlink Bypass in ONNX load
CVE-2026-27489Highonnx Vulnerable to Path Traversal via Symlink
onnx Vulnerable to Path Traversal via Symlink
CVE-2026-28500High· 8.6ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack
ONNX Untrusted Model Repository Warnings Suppressed by silent=True in onnx.hub.load() — Silent Supply-Chain Attack
CVE-2024-27318High· 7.5Onnx Directory Traversal vulnerability
Onnx Directory Traversal vulnerability
CVE-2024-27319Medium· 4.4Onnx Out-of-bounds Read vulnerability
Onnx Out-of-bounds Read vulnerability