CVE catalog

CVE-2026-115922

onnx: CVE-2026-115922

Severity: Medium
Published: Oct 26, 2026, 6:17:40 PM UTC
Source: [NVD] · [CVE record]

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 that raw_data or int32_data encodes the declared number of elements. Materializing an untrusted UINT2, INT2, UINT4, INT4, or FLOAT4E2M1 tensor through onnx.numpy_helper.to_array() or onnx.reference.ReferenceEvaluator can therefore expand a small packed payload into a disproportionately large allocation and exhaust memory. This issue is fixed in version 1.22.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	onnx	sid	`1.20.0-6`	vulnerable
Debian	onnx	forky	`1.20.0-6`	vulnerable
Debian	onnx	trixie	`1.17.0-3`	vulnerable
Debian	onnx	bookworm	`1.12.0-2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	onnx	source	sid	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	onnx	source	forky	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	onnx	source	trixie	`(unfixed)`	not yet assigned	Not reported	Not reported
Debian	onnx	source	bookworm	`(unfixed)`	not yet assigned	Not reported	Not reported

Notes

[trixie] onnx: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libonnx1]Affected
Source package: [onnx]
Details (2)
- 1.12.0-2+b4 · amd64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
- 1.12.0-2+b4 · arm64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
[libonnx-dev]Affected
Source package: [onnx]
Details (2)
- 1.12.0-2+b4 · amd64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
- 1.12.0-2+b4 · arm64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
[libonnxifi]Affected
Source package: [onnx]
Details (2)
- 1.12.0-2+b4 · amd64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
- 1.12.0-2+b4 · arm64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
[libonnx-testdata]Affected
Source package: [onnx]
Details (2)
- 1.12.0-2 · all · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
- 1.12.0-2 · all · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
[python3-onnx]Affected
Source package: [onnx]
Details (2)
- 1.12.0-2+b4 · amd64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12
- 1.12.0-2+b4 · arm64 · bookworm
  Affected
  dsa · onnx · debian · bookworm; dsa · onnx · debian · 12

[Debian 13 (Trixie)]

[libonnx1t64]Affected
Source package: [onnx]
Details (2)
- 1.17.0-3+b1 · amd64 · trixie
  Affected
  dsa · onnx · debian · 13
- 1.17.0-3+b1 · arm64 · trixie
  Affected
  dsa · onnx · debian · 13
[libonnx-dev]Affected
Source package: [onnx]
Details (2)
- 1.17.0-3+b1 · amd64 · trixie
  Affected
  dsa · onnx · debian · 13
- 1.17.0-3+b1 · arm64 · trixie
  Affected
  dsa · onnx · debian · 13
[libonnx-testdata]Affected
Source package: [onnx]
Details (2)
- 1.17.0-3 · all · trixie
  Affected
  dsa · onnx · debian · 13
- 1.17.0-3 · all · trixie
  Affected
  dsa · onnx · debian · 13
[python3-onnx]Affected
Source package: [onnx]
Details (2)
- 1.17.0-3+b1 · amd64 · trixie
  Affected
  dsa · onnx · debian · 13
- 1.17.0-3+b1 · arm64 · trixie
  Affected
  dsa · onnx · debian · 13

Observed: Oct 27, 2026, 8:33:03 AM UTC

References

[Debian Security Tracker] · [OSV Package Vulnerability Database]