Vulnerability-Lookup

CVE-2026-4502 (GCVE-0-2026-4502)

Vulnerability from cvelistv5 – Published: 2026-04-30 20:57 – Updated: 2026-06-12 20:28

Title

Arbitrary File Write and Remote Code Execution Vulnerability in Langflow v2 API

Summary

IBM Langflow Desktop 1.2.0 through 1.8.4 Langflow could allow an authenticated attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot" sequences (/../) to write arbitrary files on the system.

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

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

Assigner

ibm

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7271097	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version
IBM	Langflow Desktop	Affected: 1.2.0 , ≤ 1.8.4 (semver) cpe:2.3:a:ibm:langflow_desktop:1.2.0:::::::* cpe:2.3:a:ibm:langflow_desktop:1.8.4:::::::*

Credits

The vulnerability was reported to IBM by Akshat Sinha, Senior SRE Rubrik (https://www.linkedin.com/in/akshat-sinha-568765167).

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-4502

Vulnerability from fkie_nvd - Published: 2026-04-30 21:16 - Updated: 2026-06-17 10:56

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Summary

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7271097	Vendor Advisory

Impacted products

	Vendor	Product	Version
	langflow	langflow_desktop	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:langflow_desktop:1.2.0:*:*:*:*:*:*:*",
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    }
  ],
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  "lastModified": "2026-06-17T10:56:42.850",
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GHSA-Q6R8-4VGG-HRWG

Vulnerability from github – Published: 2026-04-30 21:30 – Updated: 2026-04-30 21:30

Details

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

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  "aliases": [
    "CVE-2026-4502"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-30T21:16:33Z",
    "severity": "MODERATE"
  },
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  "id": "GHSA-q6r8-4vgg-hrwg",
  "modified": "2026-04-30T21:30:39Z",
  "published": "2026-04-30T21:30:39Z",
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      "type": "ADVISORY",
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      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-1340

Vulnerability from csaf_certbund - Published: 2026-05-03 22:00 - Updated: 2026-05-03 22:00

Summary

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

Angriff: Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM Langflow Desktop ausnutzen, um beliebigen Code auszuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder Cross-Site-Scripting-Angriffe durchzuführen.

Betroffene Betriebssysteme: - Sonstiges - Windows

CVE-2026-3340

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

CVE-2026-3345

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

CVE-2026-3346

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

CVE-2026-4502

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

CVE-2026-4503

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

CVE-2026-6542

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop OSS <1.9.0 IBM / Langflow Desktop		OSS <1.9.0

CVE-2026-6543

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
IBM Langflow Desktop <1.9.0 IBM / Langflow Desktop		<1.9.0

References

9 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/7270886	external
https://www.ibm.com/support/pages/node/7271092	external
https://www.ibm.com/support/pages/node/7271094	external
https://www.ibm.com/support/pages/node/7271095	external
https://www.ibm.com/support/pages/node/7271096	external
https://www.ibm.com/support/pages/node/7271097	external
https://www.ibm.com/support/pages/node/7271099	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 LangChain Desktop ist eine lokale Anwendung zur Entwicklung und Ausf\u00fchrung von LangChain-basierten Anwendungen.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM Langflow Desktop ausnutzen, um beliebigen Code auszuf\u00fchren, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder Cross-Site-Scripting-Angriffe durchzuf\u00fchren.",
        "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-2026-1340 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1340.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1340 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1340"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7270886"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271092"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271094"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271095"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271096"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271097"
      },
      {
        "category": "external",
        "summary": "IBM Security Bulletin vom 2026-05-03",
        "url": "https://www.ibm.com/support/pages/node/7271099"
      }
    ],
    "source_lang": "en-US",
    "title": "IBM Langflow Desktop und OSS: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-05-03T22:00:00.000+00:00",
      "generator": {
        "date": "2026-05-04T10:44:15.513+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-1340",
      "initial_release_date": "2026-05-03T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-03T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "OSS \u003c1.9.0",
                "product": {
                  "name": "IBM Langflow Desktop OSS \u003c1.9.0",
                  "product_id": "T053494"
                }
              },
              {
                "category": "product_version",
                "name": "OSS 1.9.0",
                "product": {
                  "name": "IBM Langflow Desktop OSS 1.9.0",
                  "product_id": "T053494-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:langflow_desktop:oss__1.9.0"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003c1.9.0",
                "product": {
                  "name": "IBM Langflow Desktop \u003c1.9.0",
                  "product_id": "T053495"
                }
              },
              {
                "category": "product_version",
                "name": "1.9.0",
                "product": {
                  "name": "IBM Langflow Desktop 1.9.0",
                  "product_id": "T053495-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:ibm:langflow_desktop:1.9.0"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Langflow Desktop"
          }
        ],
        "category": "vendor",
        "name": "IBM"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-3340",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-3340"
    },
    {
      "cve": "CVE-2026-3345",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-3345"
    },
    {
      "cve": "CVE-2026-3346",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-3346"
    },
    {
      "cve": "CVE-2026-4502",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-4502"
    },
    {
      "cve": "CVE-2026-4503",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-4503"
    },
    {
      "cve": "CVE-2026-6542",
      "product_status": {
        "known_affected": [
          "T053494"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-6542"
    },
    {
      "cve": "CVE-2026-6543",
      "product_status": {
        "known_affected": [
          "T053495"
        ]
      },
      "release_date": "2026-05-03T22:00:00.000+00:00",
      "title": "CVE-2026-6543"
    }
  ]
}

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.

Action not permitted

CVE-2026-4502 (GCVE-0-2026-4502)

FKIE_CVE-2026-4502

GHSA-Q6R8-4VGG-HRWG

WID-SEC-W-2026-1340

Tags

Sightings

Nomenclature