Vulnerability-Lookup

CVE-2026-10566 (GCVE-0-2026-10566)

Vulnerability from cvelistv5 – Published: 2026-06-02 01:45 – Updated: 2026-06-02 12:24

Title

FoundationAgents MetaGPT schema.py Message.check_instruct_content deserialization

Summary

A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Severity

4.8 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

5.3 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-502 - Deserialization
CWE-20 - Improper Input Validation

Assigner

VulDB

References

6 references

URL	Tags
https://vuldb.com/vuln/367673	vdb-entrytechnical-description
https://vuldb.com/vuln/367673/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-10566	third-party-advisory
https://vuldb.com/submit/828301	third-party-advisory
https://github.com/FoundationAgents/MetaGPT/issues/2038	exploitissue-tracking
https://github.com/FoundationAgents/MetaGPT/	product

Impacted products

1 product

Vendor	Product	Version
FoundationAgents	MetaGPT	Affected: 0.8.0 Affected: 0.8.1 Affected: 0.8.2 cpe:2.3:a:foundationagents:metagpt::::::::

Credits

ASUKA39 (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-10566

Vulnerability from fkie_nvd - Published: 2026-06-02 03:16 - Updated: 2026-07-22 19:10

Severity

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

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/FoundationAgents/MetaGPT/
	cna@vuldb.com	https://github.com/FoundationAgents/MetaGPT/issues/2038
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-10566
	cna@vuldb.com	https://vuldb.com/submit/828301
	cna@vuldb.com	https://vuldb.com/vuln/367673
	cna@vuldb.com	https://vuldb.com/vuln/367673/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:foundationagents:metagpt:*:*:*:*:*:*:*:*"
          ],
          "product": "MetaGPT",
          "vendor": "FoundationAgents",
          "versions": [
            {
              "status": "affected",
              "version": "0.8.0"
            },
            {
              "status": "affected",
              "version": "0.8.1"
            },
            {
              "status": "affected",
              "version": "0.8.2"
            }
          ]
        }
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      "value": "A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una debilidad en FoundationAgents MetaGPT hasta la versi\u00f3n 0.8.2. Esto afecta a la funci\u00f3n Message.check_instruct_content del archivo metagpt/schema.py. La ejecuci\u00f3n de una manipulaci\u00f3n del argumento mapping puede conducir a la deserializaci\u00f3n. El ataque est\u00e1 restringido a la ejecuci\u00f3n local. El exploit se ha hecho p\u00fablico y podr\u00eda ser utilizado para ataques. El proyecto fue informado del problema con antelaci\u00f3n mediante un informe de incidencias, pero a\u00fan no ha respondido."
    }
  ],
  "id": "CVE-2026-10566",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
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          "version": "2.0"
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        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.9,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "LOW",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-10566",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-02T12:24:11.954083Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-02T03:16:16.210",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/FoundationAgents/MetaGPT/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/FoundationAgents/MetaGPT/issues/2038"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-10566"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/828301"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/367673"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/367673/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-3C3G-7HWG-9QMR

Vulnerability from github – Published: 2026-06-02 03:31 – Updated: 2026-07-09 13:44

Summary

FoundationAgents MetaGPT: Deserialization through flawed argument mapping via Message.check_instruct_content()

Details

Severity

5.3 (Medium)


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

1.9 (Low)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "metagpt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-10566"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-09T13:44:24Z",
    "nvd_published_at": "2026-06-02T03:16:16Z",
    "severity": "LOW"
  },
  "details": "A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "GHSA-3c3g-7hwg-9qmr",
  "modified": "2026-07-09T13:44:24Z",
  "published": "2026-06-02T03:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10566"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FoundationAgents/MetaGPT/issues/2038"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/FoundationAgents/MetaGPT"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-10566"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/828301"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367673"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367673/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": " FoundationAgents MetaGPT: Deserialization through flawed argument mapping via Message.check_instruct_content()"
}

PYSEC-2026-2637

Vulnerability from pysec - Published: 2026-07-13 15:46 - Updated: 2026-07-13 16:04

Details

Severity

5.3 (Medium)


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

1.9 (Low)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

Impacted products

Name	purl
metagpt	pkg:pypi/metagpt

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "metagpt",
        "purl": "pkg:pypi/metagpt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.8.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.1",
        "0.3.0",
        "0.4.0",
        "0.5.0",
        "0.5.1",
        "0.5.2",
        "0.6.0",
        "0.6.1",
        "0.6.10",
        "0.6.11",
        "0.6.12",
        "0.6.13",
        "0.6.2",
        "0.6.3",
        "0.6.4",
        "0.6.5",
        "0.6.6",
        "0.6.7",
        "0.6.8",
        "0.6.9",
        "0.7.0",
        "0.7.1",
        "0.7.2",
        "0.7.3",
        "0.7.4",
        "0.7.6",
        "0.7.7",
        "0.8.0",
        "0.8.1",
        "0.8.2"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-10566",
    "GHSA-3c3g-7hwg-9qmr"
  ],
  "details": "A weakness has been identified in FoundationAgents MetaGPT up to 0.8.2. This affects the function Message.check_instruct_content of the file metagpt/schema.py. Executing a manipulation of the argument mapping can lead to deserialization. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "PYSEC-2026-2637",
  "modified": "2026-07-13T16:04:50.983678Z",
  "published": "2026-07-13T15:46:13.813271Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-10566"
    },
    {
      "type": "WEB",
      "url": "https://github.com/FoundationAgents/MetaGPT/issues/2038"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/FoundationAgents/MetaGPT"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-10566"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/828301"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367673"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/367673/cti"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/metagpt"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-3c3g-7hwg-9qmr"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": " FoundationAgents MetaGPT: Deserialization through flawed argument mapping via Message.check_instruct_content()"
}

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-2026-10566 (GCVE-0-2026-10566)

FKIE_CVE-2026-10566

GHSA-3C3G-7HWG-9QMR

PYSEC-2026-2637

Tags

Sightings

Nomenclature