Vulnerability-Lookup

CVE-2026-8476 (GCVE-0-2026-8476)

Vulnerability from cvelistv5 – Published: 2026-07-17 19:11 – Updated: 2026-07-23 03:56

Title

Disk Cache Deserialization Remote Code Execution Vulnerability

Summary

IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class uses Python's unsafe pickle.loads() function to deserialize cached objects from disk without validation, integrity verification, or authentication, enabling arbitrary code execution when malicious pickle payloads are processed. Attackers who can influence cached data through file system access, malicious workflow inputs, custom components, or API manipulation can achieve complete system compromise with the privileges of the Langflow server process.

Severity

9.9 (Critical)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 00:00 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

ibm CNA under the mitre root

CNA scorecard B 88/100 over 1251 records in the last 180 days details

References

1 reference

URL	Tags
https://www.ibm.com/support/pages/node/7278922	vendor-advisorypatch

Impacted products

1 product

Vendor	Product	Version	CPE status
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

zdi-disclosures

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-8476

Vulnerability from fkie_nvd - Published: 2026-07-17 20:17 - Updated: 2026-07-23 05:16

Severity

9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Summary

References

	URL	Tags
	psirt@us.ibm.com	https://www.ibm.com/support/pages/node/7278922	Vendor Advisory

Impacted products

Vendor	Product	Version
langflow	langflow	*
apple	macos	-
linux	linux_kernel	-
microsoft	windows	-

JSON

To clipboard

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GHSA-R5MM-2QCH-FMMR

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

Details

Severity

9.9 (Critical)


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

Show details on source website

JSON

To clipboard

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  "details": "IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class\u00a0uses Python\u0027s unsafe pickle.loads() function to deserialize cached objects from disk without validation, integrity verification, or authentication, enabling arbitrary code execution when malicious pickle payloads are processed. Attackers who can influence cached data through file system access, malicious workflow inputs, custom components, or API manipulation can achieve complete system compromise with the privileges of the Langflow server process.",
  "id": "GHSA-r5mm-2qch-fmmr",
  "modified": "2026-07-17T21:31:45Z",
  "published": "2026-07-17T21:31:45Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8476"
    },
    {
      "type": "WEB",
      "url": "https://www.ibm.com/support/pages/node/7278922"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

NCSC-2026-0251

Vulnerability from csaf_ncscnl - Published: 2026-07-21 09:42 - Updated: 2026-07-21 09:42

Summary

Kwetsbaarheden verholpen in IBM Langflow OSS

Scope

15 vulnerabilities in this advisory, including CVE-2026-8476.

CVE-2026-8476

IBM Langflow OSS versions 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the AsyncDiskCache class due to unsafe deserialization, enabling attackers with file system or API access to execute arbitrary code.

9.9 (Critical)


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

Known affected: 3 products

Open the full advisory

WID-SEC-W-2026-2410

Vulnerability from csaf_certbund - Published: 2026-07-19 22:00 - Updated: 2026-08-04 22:00

Summary

IBM Langflow Desktop OSS: Mehrere Schwachstellen

Severity

Kritisch

Scope

14 vulnerabilities in this advisory, including CVE-2026-8476.

CVE-2026-8476

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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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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.
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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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CVE-2026-8476 (GCVE-0-2026-8476)

FKIE_CVE-2026-8476

GHSA-R5MM-2QCH-FMMR

NCSC-2026-0251

WID-SEC-W-2026-2410

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