CVE-2026-6596 (GCVE-0-2026-6596)

Vulnerability from cvelistv5 – Published: 2026-04-20 02:15 – Updated: 2026-04-20 02:15
VLAI?
Title
langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload
Summary
A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function create_upload_file of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CWE
Assigner
References
Impacted products
Vendor Product Version
langflow-ai langflow Affected: 1.0
Affected: 1.1.0
    cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Eric-d (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
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      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*"
          ],
          "modules": [
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          ],
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          "vendor": "langflow-ai",
          "versions": [
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              "version": "1.0"
            },
            {
              "status": "affected",
              "version": "1.1.0"
            }
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          "type": "reporter",
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        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
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          "name": "VDB-358231 | langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload",
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            "technical-description"
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        },
        {
          "name": "VDB-358231 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
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          "url": "https://vuldb.com/vuln/358231/cti"
        },
        {
          "name": "Submit #791919 | Langflow \u003c= 1.1.0 Unrestricted Upload of File with Dangerous Type",
          "tags": [
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        }
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          "value": "Advisory disclosed"
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          "time": "2026-04-19T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-04-19T15:52:15.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "langflow-ai langflow API Endpoint endpoints.py create_upload_file unrestricted upload"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-6596",
    "datePublished": "2026-04-20T02:15:13.863Z",
    "dateReserved": "2026-04-19T13:46:55.202Z",
    "dateUpdated": "2026-04-20T02:15:13.863Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • 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.



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