Vulnerability-Lookup

CVE-2026-97869 (GCVE-0-2026-97869)

Vulnerability from cvelistv5 – Published: 2026-09-25 15:15 – Updated: 2026-09-25 16:37

Title

langchain4j LangChain4j-agentic AgenticScopeJsonSerializationIT.java AgenticScopeSerializer.fromJson deserialization

Summary

A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. This vulnerability affects the function AgenticScopeSerializer.fromJson of the file AgenticScopeJsonSerializationIT.java of the component LangChain4j-agentic. This manipulation causes deserialization. Remote exploitation of the attack is possible. The attack's complexity is rated as high. It is stated that the exploitability is difficult. The exploit has been published and may be used. Upgrading to version 1.5.3-beta11, 1.11.10-beta19 and 1.18.1-beta28 is able to resolve this issue. Upgrading the affected component is advised. The project maintainer kindly explains: "The issue was reported to us privately on 23 July 2026 and fixed in releases published on 29 July 2026. It is tracked as GHSA-gmwr-7wmf-mrjm. Exploitation requires an application to have enabled AgenticScope persistence, which is opt-in, and an attacker who can already write to that store. All maintained release lines have been patched."

Severity

2.1 (Low)


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

4.1 (Medium)


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

4.1 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-25 16:37 UTC

CWE

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

Assigner

VulDB CNA under the mitre root

CNA scorecard B 83/100 over 3866 records in the last 180 days details

References

8 references

URL	Tags
https://vuldb.com/vuln/409886	vdb-entrytechnical-description
https://vuldb.com/vuln/409886/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-97869	third-party-advisory
https://vuldb.com/submit/911825	third-party-advisory
https://github.com/langchain4j/langchain4j/securi…	related
https://github.com/afish3201-debug/CVE/blob/main/…	exploit
https://github.com/langchain4j/langchain4j/releas…	patch
https://github.com/langchain4j/langchain4j/	product

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	langchain4j	Affected: 1.5.3-beta10 Affected: 1.11.10-beta18 Affected: 1.18.1-beta27 Unaffected: 1.5.3-beta11 Unaffected: 1.11.10-beta19 Unaffected: 1.18.1-beta28 cpe:2.3:a:langchain4j:langchain4j::::::::

Credits

afish (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

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            {
              "cvssV2_0": {
                "baseScore": 4.3,
                "vectorString": "AV:N/AC:H/Au:M/C:P/I:P/A:P/E:POC/RL:OF/RC:C",
                "version": "2.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-502",
                  "description": "Deserialization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            },
            {
              "descriptions": [
                {
                  "cweId": "CWE-20",
                  "description": "Improper Input Validation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-09-25T15:15:10.459Z",
            "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
            "shortName": "VulDB"
          },
          "references": [
            {
              "name": "VDB-409886 | langchain4j LangChain4j-agentic AgenticScopeJsonSerializationIT.java AgenticScopeSerializer.fromJson deserialization",
              "tags": [
                "vdb-entry",
                "technical-description"
              ],
              "url": "https://vuldb.com/vuln/409886"
            },
            {
              "name": "VDB-409886 | CTI Indicators (IOB, IOC, IOA)",
              "tags": [
                "signature",
                "permissions-required"
              ],
              "url": "https://vuldb.com/vuln/409886/cti"
            },
            {
              "name": "CVE-2026-97869 | CVE Analysis and Report",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/cve/CVE-2026-97869"
            },
            {
              "name": "Submit #911825 | langchain4j langchain4j-agentic 1.18.0 Deserialization",
              "tags": [
                "third-party-advisory"
              ],
              "url": "https://vuldb.com/submit/911825"
            },
            {
              "tags": [
                "related"
              ],
              "url": "https://github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjm"
            },
            {
              "tags": [
                "exploit"
              ],
              "url": "https://github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.md"
            },
            {
              "tags": [
                "patch"
              ],
              "url": "https://github.com/langchain4j/langchain4j/releases/tag/1.18.1"
            },
            {
              "tags": [
                "product"
              ],
              "url": "https://github.com/langchain4j/langchain4j/"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-09-25T00:00:00.000Z",
              "value": "Advisory disclosed"
            },
            {
              "lang": "en",
              "time": "2026-09-25T02:00:00.000Z",
              "value": "VulDB entry created"
            },
            {
              "lang": "en",
              "time": "2026-09-25T10:36:29.000Z",
              "value": "VulDB entry last update"
            }
          ],
          "title": "langchain4j LangChain4j-agentic AgenticScopeJsonSerializationIT.java AgenticScopeSerializer.fromJson deserialization",
          "x_generator": [
            "VulDB PVTS v202609"
          ]
        }
      },
      "cveMetadata": {
        "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "assignerShortName": "VulDB",
        "cveId": "CVE-2026-97869",
        "datePublished": "2026-09-25T15:15:10.459Z",
        "dateReserved": "2026-09-25T08:26:45.370Z",
        "dateUpdated": "2026-09-25T16:37:25.585Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-97869

Vulnerability from fkie_nvd - Published: 2026-09-25 16:17 - Updated: 2026-09-28 15:14

Severity

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

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.md
	cna@vuldb.com	https://github.com/langchain4j/langchain4j/
	cna@vuldb.com	https://github.com/langchain4j/langchain4j/releases/tag/1.18.1
	cna@vuldb.com	https://github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjm
	cna@vuldb.com	https://vuldb.com/cve/CVE-2026-97869
	cna@vuldb.com	https://vuldb.com/submit/911825
	cna@vuldb.com	https://vuldb.com/vuln/409886
	cna@vuldb.com	https://vuldb.com/vuln/409886/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:langchain4j:langchain4j:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "LangChain4j-agentic"
          ],
          "product": "langchain4j",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "1.5.3-beta10"
            },
            {
              "status": "affected",
              "version": "1.11.10-beta18"
            },
            {
              "status": "affected",
              "version": "1.18.1-beta27"
            },
            {
              "status": "unaffected",
              "version": "1.5.3-beta11"
            },
            {
              "status": "unaffected",
              "version": "1.11.10-beta19"
            },
            {
              "status": "unaffected",
              "version": "1.18.1-beta28"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. This vulnerability affects the function AgenticScopeSerializer.fromJson of the file AgenticScopeJsonSerializationIT.java of the component LangChain4j-agentic. This manipulation causes deserialization. Remote exploitation of the attack is possible. The attack\u0027s complexity is rated as high. It is stated that the exploitability is difficult. The exploit has been published and may be used. Upgrading to version 1.5.3-beta11, 1.11.10-beta19 and 1.18.1-beta28 is able to resolve this issue. Upgrading the affected component is advised. The project maintainer kindly explains: \"The issue was reported to us privately on 23 July 2026 and fixed in releases published on 29 July 2026. It is tracked as GHSA-gmwr-7wmf-mrjm. Exploitation requires an application to have enabled AgenticScope persistence, which is opt-in, and an attacker who can already write to that store. All maintained release lines have been patched.\""
    }
  ],
  "id": "CVE-2026-97869",
  "lastModified": "2026-09-28T15:14:01.513",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "MULTIPLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.3,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:H/Au:M/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.2,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 3.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 1.2,
          "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": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/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-2026-97869",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-25T16:37:00.836381Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-25T16:17:31.740",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.md"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/langchain4j/langchain4j/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/langchain4j/langchain4j/releases/tag/1.18.1"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjm"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/cve/CVE-2026-97869"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/911825"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/409886"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/409886/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-HG7F-VFFM-PPC6

Vulnerability from github – Published: 2026-09-25 18:31 – Updated: 2026-09-25 18:31

Details

Severity

4.1 (Medium)


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

1.2 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:H/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": [],
  "aliases": [
    "CVE-2026-97869"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-25T16:17:31Z",
    "severity": "LOW"
  },
  "details": "A flaw has been found in langchain4j up to 1.5.3-beta10/1.11.10-beta18/1.18.1-beta27. This vulnerability affects the function AgenticScopeSerializer.fromJson of the file AgenticScopeJsonSerializationIT.java of the component LangChain4j-agentic. This manipulation causes deserialization. Remote exploitation of the attack is possible. The attack\u0027s complexity is rated as high. It is stated that the exploitability is difficult. The exploit has been published and may be used. Upgrading to version 1.5.3-beta11, 1.11.10-beta19 and 1.18.1-beta28 is able to resolve this issue. Upgrading the affected component is advised. The project maintainer kindly explains: \"The issue was reported to us privately on 23 July 2026 and fixed in releases published on 29 July 2026. It is tracked as GHSA-gmwr-7wmf-mrjm. Exploitation requires an application to have enabled AgenticScope persistence, which is opt-in, and an attacker who can already write to that store. All maintained release lines have been patched.\"",
  "id": "GHSA-hg7f-vffm-ppc6",
  "modified": "2026-09-25T18:31:24Z",
  "published": "2026-09-25T18:31:24Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/langchain4j/langchain4j/security/advisories/GHSA-gmwr-7wmf-mrjm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97869"
    },
    {
      "type": "WEB",
      "url": "https://github.com/afish3201-debug/CVE/blob/main/Insecure%20Jackson%20Default%20Typing%20Leads%20to%20Arbitrary%20Class%20Instantiation%20in%20LangChain4j%20Agentic%20Module.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain4j/langchain4j"
    },
    {
      "type": "WEB",
      "url": "https://github.com/langchain4j/langchain4j/releases/tag/1.18.1"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-97869"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/911825"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/409886"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/409886/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:H/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",
      "type": "CVSS_V4"
    }
  ]
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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-2026-97869 (GCVE-0-2026-97869)

FKIE_CVE-2026-97869

GHSA-HG7F-VFFM-PPC6

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Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour