Vulnerability-Lookup

CVE-2026-8446 (GCVE-0-2026-8446)

Vulnerability from cvelistv5 – Published: 2026-08-05 16:27 – Updated: 2026-08-05 17:11

Title

Langflow is affected by security vulnerabilities in Model Context Protocol features

Summary

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects are configured with auth_type=oauth .

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

ibm

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7282147	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
IBM	Langflow OSS	Affected: 1.0.0 , ≤ 1.10.3 (semver) cpe:2.3:a:ibm:langflow_oss:1.0.0:::::::* cpe:2.3:a:ibm:langflow_oss:1.10.3:::::::*

Credits

CVEs reported to IBM: CVE-2026-8446 by odgrso (GMO CyberSecurity by Ierae, Inc.); CVE-2026-17626 by Thai Son Dinh (VinSOC Labs, (R&D).

Show details on NVD website

JSON

To clipboard

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WID-SEC-W-2026-2619

Vulnerability from csaf_certbund - Published: 2026-08-02 22:00 - Updated: 2026-08-05 22:00

Summary

IBM Langflow Desktop: Mehrere Schwachstellen

Severity

Hoch

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: IBM Langflow Desktop ist eine lokale Anwendung zur Entwicklung und Ausführung von Langflow-basierten Anwendungen.

Angriff: Ein Angreifer kann mehrere Schwachstellen in IBM Langflow Desktop ausnutzen, um beliebigen Programmcode auszuführen, um Informationen offenzulegen, um Dateien zu Manipulieren, und um Sicherheitsvorkehrungen zu umgehen.

Betroffene Betriebssysteme: - Sonstiges - Windows

CVE-2026-17623

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-17625

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-17626

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-17630

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-7646

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-8446

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

CVE-2026-9077

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.11.0 IBM / Langflow Desktop		<1.11.0

References

3 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.ibm.com/support/pages/node/7282147	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "IBM Langflow Desktop ist eine lokale Anwendung zur Entwicklung und Ausf\u00fchrung von Langflow-basierten Anwendungen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in IBM Langflow Desktop ausnutzen, um beliebigen Programmcode auszuf\u00fchren, um Informationen offenzulegen, um Dateien zu Manipulieren, und um Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Sonstiges\n- Windows",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-2619 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2619.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-2619 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2619"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin 7282147 vom 2026-08-02",
        "url": "https://www.ibm.com/support/pages/node/7282147"
      }
    ],
    "source_lang": "en-US",
    "title": "IBM Langflow Desktop: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-08-05T22:00:00.000+00:00",
      "generator": {
        "date": "2026-08-06T08:52:36.198+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-2619",
      "initial_release_date": "2026-08-02T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-08-02T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-08-05T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: EUVD-2026-53473, EUVD-2026-53465, EUVD-2026-53463, EUVD-2026-53464, EUVD-2026-53520, EUVD-2026-53477, EUVD-2026-53478"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c1.11.0",
                "product": {
                  "name": "IBM Langflow Desktop \u003c1.11.0",
                  "product_id": "T057466"
                }
              },
              {
                "category": "product_version",
                "name": "1.11.0",
                "product": {
                  "name": "IBM Langflow Desktop 1.11.0",
                  "product_id": "T057466-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:langflow_desktop:1.11.0"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Langflow Desktop"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-17623",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-17623"
    },
    {
      "cve": "CVE-2026-17625",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-17625"
    },
    {
      "cve": "CVE-2026-17626",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-17626"
    },
    {
      "cve": "CVE-2026-17630",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-17630"
    },
    {
      "cve": "CVE-2026-7646",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-7646"
    },
    {
      "cve": "CVE-2026-8446",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-8446"
    },
    {
      "cve": "CVE-2026-9077",
      "product_status": {
        "known_affected": [
          "T057466"
        ]
      },
      "release_date": "2026-08-02T22:00:00.000+00:00",
      "title": "CVE-2026-9077"
    }
  ]
}

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.

Action not permitted

CVE-2026-8446 (GCVE-0-2026-8446)

WID-SEC-W-2026-2619

Tags

Sightings

Nomenclature