CVE-2026-34447 | onnx up to 1.20.x symlink (GHSA-p433-9wv8-28xj)

VDB-354743 · CVE-2026-34447 · GHSA-P433-9WV8-28XJ ONNX UP TO 1.20.X SYMLINK HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 0.85+ Summaryinfo A vulnerability marked as critical has been reported in onnx up to 1.20.x. This issue affects some unknown processing. The manipulation leads to symlink. This vulnerability is listed as CVE-2026-34447. The attack must be carried out locally. There is no available exploit. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in onnx up to 1.20.x. It has been rated as problematic. This issue affects an unknown code. The manipulation with an unknown input leads to a symlink vulnerability. Using CWE to declare the problem leads to CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. Impacted is confidentiality. The summary by CVE is: Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. This issue has been patched in version 1.21.0. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-34447 since 03/27/2026. The exploitation is known to be easy. Attacking locally is a requirement. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. Upgrading to version 1.21.0 eliminates this vulnerability. Productinfo Name onnx Version 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 Website Product: https://github.com/onnx/onnx/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.1 VulDB Meta Temp Score: 4.1 VulDB Base Score: 2.8 VulDB Temp Score: 2.7 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 5.5 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Symlink CWE: CWE-61 / CWE-59 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: onnx 1.21.0 Timelineinfo 03/27/2026 CVE reserved 04/01/2026 +4 days Advisory disclosed 04/01/2026 +0 days VulDB entry created 04/01/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-p433-9wv8-28xj Status: Confirmed CVE: CVE-2026-34447 (🔒) GCVE (CVE): GCVE-0-2026-34447 GCVE (VulDB): GCVE-100-354743 Entryinfo Created: 04/01/2026 20:47 Changes: 04/01/2026 20:47 (63) Complete: 🔍 Cache ID: 99:0FF:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸