Vulnerability-Lookup

GHSA-9CC5-J3QQ-69GV

Vulnerability from github – Published: 2026-07-17 21:31 – Updated: 2026-10-05 22:31

Withdrawn 2026-10-05

Summary

Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication Bypass

Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-cf6m-vc3m-7cgm. This link is maintained to preserve external references.

Original Description

IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow's UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).

Severity

9.8 (Critical)


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

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{
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    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langflow"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.7.0"
            },
            {
              "last_affected": "1.9.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-05T22:31:17Z",
    "nvd_published_at": "2026-07-17T20:17:31Z",
    "severity": "CRITICAL"
  },
  "details": "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of\u00a0GHSA-cf6m-vc3m-7cgm. This link is maintained to preserve external references.\n\n## Original Description\nIBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow\u0027s webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configuration is set to False (which is the default setting). This allows a remote attacker who knows a flow\u0027s UUID to execute it as if they were the owner, potentially leading to Remote Code Execution (RCE).",
  "id": "GHSA-9cc5-j3qq-69gv",
  "modified": "2026-10-05T22:31:17Z",
  "published": "2026-07-17T21:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8505"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7278921"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Duplicate Advisory: Unauthenticated Flow Execution via Webhook Authentication Bypass",
  "withdrawn": "2026-10-05T22:31:17Z"
}

CVE-2026-8505 (GCVE-0-2026-8505)

Vulnerability from cvelistv5 – Published: 2026-07-17 19:06 – Updated: 2026-07-23 03:56

Title

Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution

Summary

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 00:00 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

ibm mitre root Scorecard

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7278921	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
IBM	Langflow OSS	Affected: 1.0.0 , ≤ 1.10.0 (semver) cpe:2.3:a:ibm:langflow_oss:1.0.0:::::::* cpe:2.3:a:ibm:langflow_oss:1.10.0:::::::*

Credits

Edward-x (YLChen-007)

Show details on NVD website

JSON

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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