Vulnerability-Lookup

GHSA-JV3F-QWF9-WVQ9

Vulnerability from github – Published: 2026-05-18 15:30 – Updated: 2026-06-22 18:34

Details

Dify version 1.14.1 and prior contain an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.

Severity

5.9 (Medium)


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

8.2 (High)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-41949"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-18T15:16:26Z",
    "severity": "HIGH"
  },
  "details": "Dify version 1.14.1 and prior contain an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file\u0027s UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.",
  "id": "GHSA-jv3f-qwf9-wvq9",
  "modified": "2026-06-22T18:34:00Z",
  "published": "2026-05-18T15:30:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41949"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langgenius/dify/pull/35797"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langgenius/dify/releases/tag/1.14.2"
    },
    {
      "type": "WEB",
      "url": "https://huntr.com/bounties/d50a0240-7951-4939-b989-9bded66c7682"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-preview-endpoint"
    },
    {
      "type": "WEB",
      "url": "https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-apps"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/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-2026-41949 (GCVE-0-2026-41949)

Vulnerability from cvelistv5 – Published: 2026-05-18 13:52 – Updated: 2026-07-14 20:01 X_Open Source

Title

Dify < 1.14.2 Authorization Bypass via File Preview Endpoint

Summary

Dify before version 1.14.2 contains an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.

Severity

8.2 (High)


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

5.9 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/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 2026-05-19 16:21 UTC

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://www.zafran.io/resources/difytap-zafran-di…	technical-descriptionexploit
https://huntr.com/bounties/d50a0240-7951-4939-b98…	technical-descriptionexploit
https://github.com/langgenius/dify/releases/tag/1.14.2	release-notes
https://github.com/langgenius/dify/pull/35797	issue-tracking
https://github.com/langgenius/dify/commit/432a641…	patch
https://www.vulncheck.com/advisories/dify-authori…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
langgenius	dify	Affected: 0 , < 1.14.2 (semver) cpe:2.3:a:langgenius:dify::::::node.js::*

Date Public

2026-03-30 00:00

Credits

Ido Shani and Gal Zaban of Zafran Security

Show details on NVD website

JSON

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                  },
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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.

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.
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GHSA-JV3F-QWF9-WVQ9

CVE-2026-41949 (GCVE-0-2026-41949)

Tags

Sightings

Nomenclature

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