Vulnerability-Lookup

CVE-2026-81268 (GCVE-0-2026-81268)

Vulnerability from cvelistv5 – Published: 2026-09-10 21:31 – Updated: 2026-09-12 03:55

Title

Langflow is vulnerable to authentication bypass and insufficient session expiration

Summary

IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.

Severity

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-11 00:00 UTC

CWE

CWE-613 - Insufficient Session Expiration

Assigner

ibm mitre root

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7286662	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version	CPE status
IBM	Langflow OSS	Affected: 1.0.0 , ≤ 1.11.5 (semver) cpe:2.3:a:ibm:langflow_oss:1.0.0:::::::* cpe:2.3:a:ibm:langflow_oss:1.11.5:::::::*

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JSON

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FKIE_CVE-2026-81268

Vulnerability from fkie_nvd - Published: 2026-09-10 22:17 - Updated: 2026-09-16 00:58

Severity

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

Summary

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7286662	Vendor Advisory

Impacted products

	Vendor	Product	Version
	langflow	langflow	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:langflow_oss:1.11.5:*:*:*:*:*:*:*"
          ],
          "product": "Langflow OSS",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "1.11.5",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
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    }
  ],
  "id": "CVE-2026-81268",
  "lastModified": "2026-09-16T00:58:26.763",
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GHSA-2FPX-W7MW-JHXJ

Vulnerability from github – Published: 2026-09-11 00:31 – Updated: 2026-09-11 00:31

Details

Severity

8.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-81268"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-613"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-10T22:17:02Z",
    "severity": "HIGH"
  },
  "details": "IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute flows and obtain sensitive information due to insufficient session expiration of API keys after user deactivation.",
  "id": "GHSA-2fpx-w7mw-jhxj",
  "modified": "2026-09-11T00:31:15Z",
  "published": "2026-09-11T00:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81268"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7286662"
    }
  ],
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      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ]
}

WID-SEC-W-2026-3239

Vulnerability from csaf_certbund - Published: 2026-09-08 22:00 - Updated: 2026-09-10 22:00

Summary

Langflow OSS: Mehrere Schwachstellen

Severity

Hoch

Scope

21 vulnerabilities in this advisory, including CVE-2026-81268.

CVE-2026-81268

Known affected: 2 products

Open the full advisory

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.
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.

Action not permitted

CVE-2026-81268 (GCVE-0-2026-81268)

FKIE_CVE-2026-81268

GHSA-2FPX-W7MW-JHXJ

WID-SEC-W-2026-3239

Tags

Sightings

Nomenclature

Related by attack behaviour