Vulnerability-Lookup

CVE-2026-7846 (GCVE-0-2026-7846)

Vulnerability from cvelistv5 – Published: 2026-05-05 16:00 – Updated: 2026-05-05 16:11

Title

chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou

Summary

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Severity

2.1 (Low)


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

2.6 (Low)


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

2.6 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-367 - Time-of-check Time-of-use
CWE-362 - Race Condition

Assigner

VulDB

References

6 references

URL	Tags
https://vuldb.com/vuln/361125	vdb-entrytechnical-description
https://vuldb.com/vuln/361125/cti	signaturepermissions-required
https://vuldb.com/submit/807795	third-party-advisory
https://github.com/chatchat-space/Langchain-Chatc…	issue-tracking
https://github.com/3em0/cve_repo/blob/main/Langch…	exploit
https://github.com/chatchat-space/Langchain-Chatchat/	product

Impacted products

1 product

Vendor	Product	Version
chatchat-space	Langchain-Chatchat	Affected: 0.3.1.0 Affected: 0.3.1.1 Affected: 0.3.1.2 Affected: 0.3.1.3

Credits

Dem00 (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-7846",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-05T16:11:12.705106Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-05T16:11:21.230Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "OpenAI-Compatible File Upload API"
          ],
          "product": "Langchain-Chatchat",
          "vendor": "chatchat-space",
          "versions": [
            {
              "status": "affected",
              "version": "0.3.1.0"
            },
            {
              "status": "affected",
              "version": "0.3.1.1"
            },
            {
              "status": "affected",
              "version": "0.3.1.2"
            },
            {
              "status": "affected",
              "version": "0.3.1.3"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Dem00 (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 2.1,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.4,
            "vectorString": "AV:A/AC:H/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-367",
              "description": "Time-of-check Time-of-use",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-362",
              "description": "Race Condition",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-05T16:00:15.199Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-361125 | chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/361125"
        },
        {
          "name": "VDB-361125 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/361125/cti"
        },
        {
          "name": "Submit #807795 | chatchat-space Langchain-Chatchat 0.3.1.3 TOCTOU Race Condition / CWE-367",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/807795"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5463"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/chatchat-space/Langchain-Chatchat/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-05-05T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-05-05T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-05-05T12:26:17.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-7846",
    "datePublished": "2026-05-05T16:00:15.199Z",
    "dateReserved": "2026-05-05T10:20:56.988Z",
    "dateUpdated": "2026-05-05T16:11:21.230Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-7846",
      "date": "2026-07-26",
      "epss": "0.00162",
      "percentile": "0.05759"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-7846\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-05-05T16:16:19.577\",\"lastModified\":\"2026-07-24T08:10:00.150\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"},{\"lang\":\"es\",\"value\":\"Se ha encontrado una vulnerabilidad en chatchat-space Langchain-Chatchat hasta 0.3.1.3. Afectada es la funci\u00f3n files del archivo libs/chatchat-server/chatchat/server/api_server/openai_routes.py del componente OpenAI-Compatible File Upload API. Dicha manipulaci\u00f3n del argumento file.filename conduce a time-of-check time-of-use. Se requiere acceso a la red local para que este ataque tenga \u00e9xito. El ataque requiere un alto nivel de complejidad. La explotabilidad se considera dif\u00edcil. El exploit ha sido divulgado al p\u00fablico y puede ser utilizado. El proyecto fue informado del problema tempranamente a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido.\"}],\"affected\":[{\"source\":\"cna@vuldb.com\",\"affectedData\":[{\"vendor\":\"chatchat-space\",\"product\":\"Langchain-Chatchat\",\"modules\":[\"OpenAI-Compatible File Upload API\"],\"versions\":[{\"version\":\"0.3.1.0\",\"status\":\"affected\"},{\"version\":\"0.3.1.1\",\"status\":\"affected\"},{\"version\":\"0.3.1.2\",\"status\":\"affected\"},{\"version\":\"0.3.1.3\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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\",\"baseScore\":1.2,\"baseSeverity\":\"LOW\",\"attackVector\":\"ADJACENT\",\"attackComplexity\":\"HIGH\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"NONE\",\"vulnIntegrityImpact\":\"LOW\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"PROOF_OF_CONCEPT\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":2.6,\"baseSeverity\":\"LOW\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.2,\"impactScore\":1.4}],\"cvssMetricV2\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:A/AC:H/Au:S/C:N/I:P/A:N\",\"baseScore\":1.4,\"accessVector\":\"ADJACENT_NETWORK\",\"accessComplexity\":\"HIGH\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"NONE\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":2.5,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-05-05T16:11:12.705106Z\",\"id\":\"CVE-2026-7846\",\"options\":[{\"exploitation\":\"poc\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"cna@vuldb.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-362\"},{\"lang\":\"en\",\"value\":\"CWE-367\"}]}],\"references\":[{\"url\":\"https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/chatchat-space/Langchain-Chatchat/\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://github.com/chatchat-space/Langchain-Chatchat/issues/5463\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/submit/807795\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/361125\",\"source\":\"cna@vuldb.com\"},{\"url\":\"https://vuldb.com/vuln/361125/cti\",\"source\":\"cna@vuldb.com\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-05T19:50:42+00:00",
      "cve": "CVE-2026-7846",
      "id": "CVE-2026-7846",
      "initial_release_date": "2026-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7846.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-7846\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-05-05T16:11:12.705106Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-05-05T16:11:16.224Z\"}}], \"cna\": {\"title\": \"chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Dem00 (VulDB User)\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"VulDB CNA Team\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 2.1, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 2.6, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 2.6, \"baseSeverity\": \"LOW\", \"vectorString\": \"CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 1.4, \"vectorString\": \"AV:A/AC:H/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"vendor\": \"chatchat-space\", \"modules\": [\"OpenAI-Compatible File Upload API\"], \"product\": \"Langchain-Chatchat\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.3.1.0\"}, {\"status\": \"affected\", \"version\": \"0.3.1.1\"}, {\"status\": \"affected\", \"version\": \"0.3.1.2\"}, {\"status\": \"affected\", \"version\": \"0.3.1.3\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-05-05T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-05-05T02:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-05-05T12:26:17.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/vuln/361125\", \"name\": \"VDB-361125 | chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/vuln/361125/cti\", \"name\": \"VDB-361125 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/submit/807795\", \"name\": \"Submit #807795 | chatchat-space Langchain-Chatchat 0.3.1.3 TOCTOU Race Condition / CWE-367\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/chatchat-space/Langchain-Chatchat/issues/5463\", \"tags\": [\"issue-tracking\"]}, {\"url\": \"https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md\", \"tags\": [\"exploit\"]}, {\"url\": \"https://github.com/chatchat-space/Langchain-Chatchat/\", \"tags\": [\"product\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-367\", \"description\": \"Time-of-check Time-of-use\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-362\", \"description\": \"Race Condition\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-05-05T16:00:15.199Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-7846\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-05T16:11:21.230Z\", \"dateReserved\": \"2026-05-05T10:20:56.988Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-05-05T16:00:15.199Z\", \"assignerShortName\": \"VulDB\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-7846

Vulnerability from fkie_nvd - Published: 2026-05-05 16:16 - Updated: 2026-06-17 11:03

Severity

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

Summary

References

	URL	Tags
	cna@vuldb.com	https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md
	cna@vuldb.com	https://github.com/chatchat-space/Langchain-Chatchat/
	cna@vuldb.com	https://github.com/chatchat-space/Langchain-Chatchat/issues/5463
	cna@vuldb.com	https://vuldb.com/submit/807795
	cna@vuldb.com	https://vuldb.com/vuln/361125
	cna@vuldb.com	https://vuldb.com/vuln/361125/cti

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "modules": [
            "OpenAI-Compatible File Upload API"
          ],
          "product": "Langchain-Chatchat",
          "vendor": "chatchat-space",
          "versions": [
            {
              "status": "affected",
              "version": "0.3.1.0"
            },
            {
              "status": "affected",
              "version": "0.3.1.1"
            },
            {
              "status": "affected",
              "version": "0.3.1.2"
            },
            {
              "status": "affected",
              "version": "0.3.1.3"
            }
          ]
        }
      ],
      "source": "cna@vuldb.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet."
    }
  ],
  "id": "CVE-2026-7846",
  "lastModified": "2026-06-17T11:03:01.940",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "ADJACENT_NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 1.4,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:A/AC:H/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "cna@vuldb.com",
        "type": "Secondary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 2.6,
          "baseSeverity": "LOW",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 1.4,
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "NONE",
          "attackVector": "ADJACENT",
          "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": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cna@vuldb.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-7846",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-05T16:11:12.705106Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-05T16:16:19.577",
  "references": [
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat/"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5463"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/submit/807795"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/361125"
    },
    {
      "source": "cna@vuldb.com",
      "url": "https://vuldb.com/vuln/361125/cti"
    }
  ],
  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ],
      "source": "cna@vuldb.com",
      "type": "Secondary"
    }
  ]
}

GHSA-X229-W2J4-H748

Vulnerability from github – Published: 2026-05-05 18:33 – Updated: 2026-05-08 22:17

Summary

Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API

Details

Severity

2.6 (Low)


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

1.2 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain-chatchat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.3.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-7846"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-08T22:17:33Z",
    "nvd_published_at": "2026-05-05T16:16:19Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "GHSA-x229-w2j4-h748",
  "modified": "2026-05-08T22:17:33Z",
  "published": "2026-05-05T18:33:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7846"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5463"
    },
    {
      "type": "WEB",
      "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/807795"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/361125"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/361125/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API"
}

PYSEC-2026-2559

Vulnerability from pysec - Published: 2026-07-13 15:02 - Updated: 2026-07-13 16:04

Details

Severity

2.6 (Low)


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

1.2 (Low)


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

Impacted products

Name	purl
langchain-chatchat	pkg:pypi/langchain-chatchat

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "langchain-chatchat",
        "purl": "pkg:pypi/langchain-chatchat"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.3.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.3.0",
        "0.3.0.20240506",
        "0.3.0.20240606",
        "0.3.0.20240610",
        "0.3.0.20240610.1",
        "0.3.0.20240611",
        "0.3.0.20240612",
        "0.3.0.20240612.1",
        "0.3.0.20240612.2",
        "0.3.0.20240612.3",
        "0.3.0.20240612.4",
        "0.3.0.20240616",
        "0.3.0.20240618",
        "0.3.0.20240619",
        "0.3.0.20240621",
        "0.3.0.20240621.3",
        "0.3.0.20240625",
        "0.3.0.20240625.1",
        "0.3.1",
        "0.3.1.1",
        "0.3.1.2",
        "0.3.1.3"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-7846",
    "GHSA-x229-w2j4-h748"
  ],
  "details": "A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "PYSEC-2026-2559",
  "modified": "2026-07-13T16:04:29.262154Z",
  "published": "2026-07-13T15:02:57.451046Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-7846"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat/issues/5463"
    },
    {
      "type": "WEB",
      "url": "https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/chatchat-space/Langchain-Chatchat"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/807795"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/361125"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/361125/cti"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/langchain-chatchat"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-x229-w2j4-h748"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Langchain-Chatchat has a Race Condition in its OpenAI-Compatible File Upload API"
}

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-2026-7846 (GCVE-0-2026-7846)

FKIE_CVE-2026-7846

GHSA-X229-W2J4-H748

PYSEC-2026-2559

Tags

Sightings

Nomenclature