CVE-2026-82834 (GCVE-0-2026-82834)

Vulnerability from cvelistv5 – Published: 2026-08-31 19:15 – Updated: 2026-08-31 19:15
VLAI
Title
Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control
Summary
A security flaw has been discovered in Doccano Open Source Annotation Tools for Machine Learning Practitioners and Auto Labeling Pipeline Module to Annotate a Document Automatically up to 1.8.5. This affects the function LabelList of the file /v1/projects/1/category-types of the component Bulk-Delete Endpoint. Performing a manipulation results in improper access controls. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
CWE
  • CWE-284 - Improper Access Controls
  • CWE-266 - Incorrect Privilege Assignment
References
URL Tags
https://vuldb.com/vuln/397246 vdb-entrytechnical-description
https://vuldb.com/vuln/397246/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82834 third-party-advisory
https://vuldb.com/submit/876639 third-party-advisory
https://drive.google.com/file/d/1qRWtrUHfr-huJlr-… exploit
Impacted products
Vendor Product Version CPE status
Doccano Open Source Annotation Tools for Machine Learning Practitioners Affected: 1.8.0
Affected: 1.8.1
Affected: 1.8.2
Affected: 1.8.3
Affected: 1.8.4
Affected: 1.8.5
    cpe:2.3:a:doccano:open_source_annotation_tools_for_machine_learning_practitioners:*:*:*:*:*:*:*:*
Create a notification for this product.
Doccano Auto Labeling Pipeline Module to Annotate a Document Automatically Affected: 1.8.0
Affected: 1.8.1
Affected: 1.8.2
Affected: 1.8.3
Affected: 1.8.4
Affected: 1.8.5
    cpe:2.3:a:doccano:auto_labeling_pipeline_module_to_annotate_a_document_automatically:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:doccano:open_source_annotation_tools_for_machine_learning_practitioners:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Bulk-Delete Endpoint"
          ],
          "product": "Open Source Annotation Tools for Machine Learning Practitioners",
          "vendor": "Doccano",
          "versions": [
            {
              "status": "affected",
              "version": "1.8.0"
            },
            {
              "status": "affected",
              "version": "1.8.1"
            },
            {
              "status": "affected",
              "version": "1.8.2"
            },
            {
              "status": "affected",
              "version": "1.8.3"
            },
            {
              "status": "affected",
              "version": "1.8.4"
            },
            {
              "status": "affected",
              "version": "1.8.5"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:doccano:auto_labeling_pipeline_module_to_annotate_a_document_automatically:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Bulk-Delete Endpoint"
          ],
          "product": "Auto Labeling Pipeline Module to Annotate a Document Automatically",
          "vendor": "Doccano",
          "versions": [
            {
              "status": "affected",
              "version": "1.8.0"
            },
            {
              "status": "affected",
              "version": "1.8.1"
            },
            {
              "status": "affected",
              "version": "1.8.2"
            },
            {
              "status": "affected",
              "version": "1.8.3"
            },
            {
              "status": "affected",
              "version": "1.8.4"
            },
            {
              "status": "affected",
              "version": "1.8.5"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Stephen Lin (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security flaw has been discovered in Doccano Open Source Annotation Tools for Machine Learning Practitioners and Auto Labeling Pipeline Module to Annotate a Document Automatically up to 1.8.5. This affects the function LabelList of the file /v1/projects/1/category-types of the component Bulk-Delete Endpoint. Performing a manipulation results in improper access controls. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R",
            "version": "3.0"
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        },
        {
          "cvssV2_0": {
            "baseScore": 5.5,
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "Improper Access Controls",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-266",
              "description": "Incorrect Privilege Assignment",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-31T19:15:08.323Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-397246 | Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/397246"
        },
        {
          "name": "VDB-397246 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/397246/cti"
        },
        {
          "name": "CVE-2026-82834 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-82834"
        },
        {
          "name": "Submit #876639 | doccano v1.8.5 Broken Access Control",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/876639"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://drive.google.com/file/d/1qRWtrUHfr-huJlr-Tb8zFj3pIg8Jnwhk/view?usp=drive_link"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-31T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-08-31T02:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-08-31T09:31:02.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "Doccano Open Source Annotation Tools for Machine Learning Practitioners Bulk-Delete Endpoint category-types LabelList access control",
      "x_generator": [
        "VulDB PVTS v202608"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-82834",
    "datePublished": "2026-08-31T19:15:08.323Z",
    "dateReserved": "2026-08-31T07:25:51.029Z",
    "dateUpdated": "2026-08-31T19:15:08.323Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-82834",
      "date": "2026-09-01",
      "epss": "0.00221",
      "percentile": "0.12487"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-82834\",\"sourceIdentifier\":\"cna@vuldb.com\",\"published\":\"2026-08-31T20:17:15.510\",\"lastModified\":\"2026-08-31T20:56:08.800\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A security flaw has been discovered in Doccano Open Source Annotation Tools for Machine Learning Practitioners and Auto Labeling Pipeline Module to Annotate a Document Automatically up to 1.8.5. This affects the function LabelList of the file /v1/projects/1/category-types of the component Bulk-Delete Endpoint. Performing a manipulation results in improper access controls. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. 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  }
}



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Sightings

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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.
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  • 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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