CVE catalog

CVE-2026-34445

Severity: High · CVSS 8.6
Published: Apr 1, 2026, 5:30:19 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.29% · Oct 25, 2026

Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, the ExternalDataInfo class in ONNX was using Python’s setattr() function to load metadata (like file paths or data lengths) directly from an ONNX model file. It didn’t check if the "keys" in the file were valid. Due to this, an attacker could craft a malicious model that overwrites internal object properties. This issue has been patched in version 1.21.0.

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
Cpe	onnx	Not reported	Not reported	vulnerable
Cpe	onnx	Not reported	`1.21.0`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	onnx	source	sid	`(unfixed)`	not yet assigned	Not reported	[1132606]
Debian	onnx	source	forky	`(unfixed)`	not yet assigned	Not reported	[1132606]
Debian	onnx	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1132606]
Debian	onnx	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1132606]
Cpe	onnx	cpe	Not reported	`1.21.0`	Not reported	Not reported	Not reported

[Debian bug #1132606]

Notes

[trixie] onnx: Minor issue [bookworm] onnx: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

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

[Debian 13 (Trixie)]

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

Observed: Oct 23, 2026, 10:35:53 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]