EUVD-2026-88318
GHSA-6crx-pj66-wf6h
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Remote, low-complexity, no attacker auth; requires the victim to load a malicious model (UI:R), and exec()-based RCE yields full C/I/A on the loading user's context.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
Unsloth Zoo versions 2025.9.9 before 2026.8.14, as implemented in Unsloth 2025.9.9 through 2026.8.19, contains a code injection vulnerability in the model-loading compile path where the get_transformers_model_type() function in hf_utils.py collects model_type values from nested model configurations without enforcing a character allowlist, allowing newlines and arbitrary Python source to survive normalization. Attackers can embed a newline in a nested model_type value within a malicious model's config.json to terminate the generated import statement and execute arbitrary Python code via exec() in unsloth_compile_transformers(), achieving remote code execution as the loading user when the model is loaded for training or inference.
Articles & Coverage 1
AnalysisAI
Loading a malicious model into Unsloth Zoo 2025.9.9 through 2026.8.13 (as shipped in Unsloth 2025.9.9 through 2026.8.19) lets that model's config.json run arbitrary Python in the loading user's process, because a nested model_type value containing a newline escapes into an exec()-generated import statement. Exploitation requires the victim to load an attacker-controlled model for training or inference - a user-interaction gate, but no authentication on the attacker side (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H; vendor score 8.6). …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
No credit card · 7-day full trial
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to load an attacker-controlled model (config.json with a malicious nested model_type) into Unsloth for training or inference - this is the UI:P/user-interaction gate. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine, high-priority issue for anyone running Unsloth/Unsloth Zoo against untrusted models. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade unsloth_zoo to 2026.8.14 or later; the accompanying Unsloth commit (92ee0207a38ebc8af1a0e678aa92d7e7d901ea0d) raises the dependency floor to unsloth_zoo>=2026.8.15 across its extras, so installing the current Unsloth release is the simplest path. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every workstation, server, and CI/CD pipeline running Unsloth 2025.9.9 through 2026.8.19 or the bundled Unsloth Zoo 2025.9.9 through 2026.8.13, and immediately suspend or quarantine automatic ingestion of third-party and user-supplied models from public hubs until remediation is complete. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
Wazuh SIEM platform versions 4.4.0 through 4.9.0 contain an unsafe deserialization vulnerability in the DistributedAPI t
BentoML version 1.4.2 and earlier contains an unauthenticated remote code execution vulnerability through insecure deser
pgAdmin 4 contains critical remote code execution vulnerabilities in the Query Tool download and Cloud Deployment endpoi
The renderLocalView function in render/views.py in graphite-web in Graphite 0.9.5 through 0.9.10 uses the pickle Python
BentoML is a Python library for building online serving systems optimized for AI apps and model inference. Rated critica
OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCiph
pyLoad download manager version prior to 0.5.0b3.dev77 exposes the Flask SECRET_KEY through an unauthenticated endpoint.
Langflow (a visual LLM pipeline builder) contains a critical unauthenticated code execution vulnerability (CVE-2026-3301
In Mercurial before 4.1.3, "hg serve --stdio" allows remote authenticated users to launch the Python debugger, and conse
Unauthenticated remote code execution affects Kestra OSS (the open-source event-driven orchestration platform) prior to
Unauthenticated remote code execution in Marimo ≤0.20.4 allows attackers to execute arbitrary system commands via the `/
pyLoad is the free and open-source Download Manager written in pure Python. Rated medium severity (CVSS 5.3), this vulne
Same weakness CWE-94 – Code Injection
View allVendor StatusVendor
Share
External POC / Exploit Code
Leaving vuln.today