EUVD-2026-55743
GHSA-4j2p-28q2-5m79
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/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
Local vector because the malicious checkpoint must be on-disk; PR:N since no OS credentials are needed; UI:R for the required checkpoint-load action; C:H and A:H for file-read and DoS; I:N as no write primitive exists in the described behavior.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/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
Lifecycle Timeline
3DescriptionCVE.org
Hugging Face Accelerate through 1.14.0 contains a path traversal vulnerability in load_checkpoint_in_model and load_checkpoint_and_dispatch functions that fail to sanitize weight_map entries from sharded checkpoint indexes. Attackers can supply relative paths with ../ sequences or absolute paths to read arbitrary files, or point shard entries at named pipes to cause indefinite blocking and denial of service.
AnalysisAI
Path traversal in Hugging Face Accelerate through 1.14.0 exposes two distinct attack outcomes when a user loads a crafted sharded checkpoint: sensitive file disclosure via relative (../) or absolute path entries in the weight_map index, and indefinite process blocking via named pipe references enabling denial of service. A publicly available proof-of-concept exists at GitHub issue #4067, reported by VulnCheck. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must invoke load_checkpoint_in_model or load_checkpoint_and_dispatch on a malicious or corrupted sharded checkpoint index - this is the UI:P passive-user-interaction condition in the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 with vector AV:L/AC:L/AT:N/PR:N/UI:P reflects a local attack requiring passive user interaction - loading the checkpoint - with no system-level privileges needed and high confidentiality and availability impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker publishes a malicious model checkpoint on Hugging Face Hub or a similar model registry, crafting the weight_map index so shard filenames contain entries like ../../etc/shadow or /proc/self/environ. When a developer calls load_checkpoint_in_model() - a routine step in model evaluation or fine-tuning - Accelerate opens and reads the targeted file as if it were model weights, leaking its contents into the process. … |
| Remediation | Upstream fixes are available in GitHub PRs #4070 (https://github.com/huggingface/accelerate/pull/4070) and #4138 (https://github.com/huggingface/accelerate/pull/4138). … Detailed patch versions, workarounds, and compensating controls in full report. |
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