Vulnerability-Lookup

GHSA-FV5V-HFXP-5379

Vulnerability from github – Published: 2026-08-17 21:31 – Updated: 2026-08-17 21:31

Details

Hugging Face Transformers fails to validate shard filenames in checkpoint index files, allowing attackers to read arbitrary files outside the model directory. Attackers can supply malicious index files with parent-directory references or absolute paths that are joined without validation, enabling file disclosure and filesystem reconnaissance.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

6.8 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-75104"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-17T21:16:49Z",
    "severity": "MODERATE"
  },
  "details": "Hugging Face Transformers fails to validate shard filenames in checkpoint index files, allowing attackers to read arbitrary files outside the model directory. Attackers can supply malicious index files with parent-directory references or absolute paths that are joined without validation, enabling file disclosure and filesystem reconnaissance.",
  "id": "GHSA-fv5v-hfxp-5379",
  "modified": "2026-08-17T21:31:26Z",
  "published": "2026-08-17T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-75104"
    },
    {
      "type": "WEB",
      "url": "https://github.com/huggingface/transformers/issues/47176"
    },
    {
      "type": "WEB",
      "url": "https://github.com/huggingface/transformers/issues/47177"
    },
    {
      "type": "WEB",
      "url": "https://github.com/huggingface/transformers"
    },
    {
      "type": "WEB",
      "url": "https://github.com/huggingface/transformers/blob/main/src/transformers/utils/hub.py"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/hugging-face-transformers-path-traversal-via-checkpoint-index"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-75104 (GCVE-0-2026-75104)

Vulnerability from cvelistv5 – Published: 2026-08-17 20:36 – Updated: 2026-08-18 12:40

Title

Hugging Face Transformers Path Traversal via Checkpoint Index

Summary

Severity

6.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-18 12:39 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/huggingface/transformers/issue…	issue-tracking
https://github.com/huggingface/transformers/issue…	issue-tracking
https://github.com/huggingface/transformers	product
https://github.com/huggingface/transformers/blob/…	technical-description
https://www.vulncheck.com/advisories/hugging-face…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
huggingface	transformers	Affected: 0 , ≤ 5.15.0 (custom) cpe:2.3:a:huggingface:transformers::::::::

Date Public

2026-07-08 00:00

Credits

George Chen

Show details on NVD website

JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-75104",
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                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-18T12:39:44.371007Z",
                "version": "2.0.3"
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    "datePublished": "2026-08-17T20:36:00.721Z",
    "dateReserved": "2026-08-17T17:28:41.677Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

GHSA-FV5V-HFXP-5379

CVE-2026-75104 (GCVE-0-2026-75104)

Tags

Sightings

Nomenclature