Vulnerability-Lookup

CNVD-2021-84596

Vulnerability from cnvd - Published: 2021-11-06

Title

GitLab信息泄露漏洞（CNVD-2021-84596）

Description

GitLab是美国GitLab公司的一款使用Ruby on Rails开发的、自托管的、Git（版本控制系统）项目仓库应用程序。该程序可用于查阅项目的文件内容、提交历史、Bug列表等。 GitLab CE/EE存在信息泄露漏洞，该漏洞允许通过 Rails 日志公开存储在对象存储中的工件的完整 URL。目前没有详细的漏洞细节提供。

Severity

中

Formal description

目前厂商暂未发布修复措施解决此安全问题，建议使用此软件的用户随时关注厂商主页或参考网址以获取解决办法： https://gitlab.com/

Reference

https://gitlab.com/gitlab-org/gitlab/-/issues/325088, https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json

Impacted products

Name
['GitLab GitLab 13.1.10', 'GitLab GitLab >=11.11.0;<=11.11.8', 'GitLab GitLab 11.13.14', 'GitLab GitLab 12.0', 'GitLab GitLab >=12.0.0;<=12.0.10', 'GitLab GitLab >=12.1.0;<=12.1.6', 'GitLab GitLab >=12.1.8;<=12.1.17', 'GitLab GitLab >=12.2.0;<=12.2.12', 'GitLab GitLab >=12.3.0;<=12.3.9', 'GitLab GitLab >=12.4.0;<=12.4.4', 'GitLab GitLab >=12.4.6;<=12.4.8', 'GitLab GitLab >=12.5.0;<=12.5.10', 'GitLab GitLab >=12.6.0;<=12.6.8', 'GitLab GitLab >=12.7.0;<=12.7.9', 'GitLab GitLab 12.8.0', 'GitLab GitLab 12.8.1', 'GitLab GitLab >=12.8.3;<=12.8.10', 'GitLab GitLab 12.9', 'GitLab GitLab >=12.9.0;<=12.9.10', 'GitLab GitLab >=12.10.0;<=12.10.13', 'GitLab GitLab 13.0.0', 'GitLab GitLab 13.0.1', 'GitLab GitLab >=13.0.3;<=13.0.10', 'GitLab GitLab 13.0.12', 'GitLab GitLab >=13.1.0;<=13.1.8', 'GitLab GitLab >=13.2.0;<=13.2.6', 'GitLab GitLab >=13.2.8;<=13.2.10', 'GitLab GitLab >=13.3.0;<=13.3.2', 'GitLab GitLab >=13.3.4;<=13.3.9', 'GitLab GitLab >=13.4.0;<=13.4.7', 'GitLab GitLab >=13.5.0;<=13.5.2', 'GitLab GitLab 13.5.6', 'GitLab GitLab >=13.6.0;<=13.6.2', 'GitLab GitLab >=13.6.4;<=13.6.7', 'GitLab GitLab >=13.7.0;<=13.7.9', 'GitLab GitLab >=13.8.0;<=13.8.8', 'GitLab GitLab >=13.9.0;<=13.9.7', 'GitLab GitLab >=13.10.0;<=13.10.5', 'GitLab GitLab >=13.11.0;<=13.11.7', 'GitLab GitLab >=13.12.0;<=13.12.9', 'GitLab GitLab >=14.0.0;<=14.0.9', 'GitLab GitLab >=14.1.0;<=14.1.6', 'GitLab GitLab 12.0.12', 'GitLab GitLab 12.4.5', 'GitLab GitLab 12.7', 'GitLab GitLab 12.8.2', 'GitLab GitLab >=13.5.3;<=13.5.5', 'GitLab GitLab >=14.2.0;<=14.2.4', 'GitLab GitLab 14.3.0', 'GitLab GitLab >=10.8.0;<=10.8.7', 'GitLab GitLab 10.9.0', 'GitLab GitLab >=11.0.0;<=11.0.6', 'GitLab GitLab >=11.1.0;<=11.1.8', 'GitLab GitLab >=11.2.0;<=11.2.8', 'GitLab GitLab >=11.3.0;<=11.3.14', 'GitLab GitLab 11.4', 'GitLab GitLab >=11.4.0;<=11.4.14', 'GitLab GitLab 11.5', 'GitLab GitLab >=11.5.0;<=11.5.11', 'GitLab GitLab 11.6', 'GitLab GitLab >=11.6.0;<=11.6.11', 'GitLab GitLab 11.7', 'GitLab GitLab >=11.7.0;<=11.7.8', 'GitLab GitLab >=11.7.10;<=11.7.12', 'GitLab GitLab 11.8', 'GitLab GitLab >=11.8.0;<=11.8.10', 'GitLab GitLab 11.9', 'GitLab GitLab >=11.9.0;<=11.9.12', 'GitLab GitLab 11.10', 'GitLab GitLab >=11.10.0;<=11.10.8', 'GitLab GitLab 11.11']

Name

['GitLab GitLab 13.1.10', 'GitLab GitLab >=11.11.0;<=11.11.8', 'GitLab GitLab 11.13.14', 'GitLab GitLab 12.0', 'GitLab GitLab >=12.0.0;<=12.0.10', 'GitLab GitLab >=12.1.0;<=12.1.6', 'GitLab GitLab >=12.1.8;<=12.1.17', 'GitLab GitLab >=12.2.0;<=12.2.12', 'GitLab GitLab >=12.3.0;<=12.3.9', 'GitLab GitLab >=12.4.0;<=12.4.4', 'GitLab GitLab >=12.4.6;<=12.4.8', 'GitLab GitLab >=12.5.0;<=12.5.10', 'GitLab GitLab >=12.6.0;<=12.6.8', 'GitLab GitLab >=12.7.0;<=12.7.9', 'GitLab GitLab 12.8.0', 'GitLab GitLab 12.8.1', 'GitLab GitLab >=12.8.3;<=12.8.10', 'GitLab GitLab 12.9', 'GitLab GitLab >=12.9.0;<=12.9.10', 'GitLab GitLab >=12.10.0;<=12.10.13', 'GitLab GitLab 13.0.0', 'GitLab GitLab 13.0.1', 'GitLab GitLab >=13.0.3;<=13.0.10', 'GitLab GitLab 13.0.12', 'GitLab GitLab >=13.1.0;<=13.1.8', 'GitLab GitLab >=13.2.0;<=13.2.6', 'GitLab GitLab >=13.2.8;<=13.2.10', 'GitLab GitLab >=13.3.0;<=13.3.2', 'GitLab GitLab >=13.3.4;<=13.3.9', 'GitLab GitLab >=13.4.0;<=13.4.7', 'GitLab GitLab >=13.5.0;<=13.5.2', 'GitLab GitLab 13.5.6', 'GitLab GitLab >=13.6.0;<=13.6.2', 'GitLab GitLab >=13.6.4;<=13.6.7', 'GitLab GitLab >=13.7.0;<=13.7.9', 'GitLab GitLab >=13.8.0;<=13.8.8', 'GitLab GitLab >=13.9.0;<=13.9.7', 'GitLab GitLab >=13.10.0;<=13.10.5', 'GitLab GitLab >=13.11.0;<=13.11.7', 'GitLab GitLab >=13.12.0;<=13.12.9', 'GitLab GitLab >=14.0.0;<=14.0.9', 'GitLab GitLab >=14.1.0;<=14.1.6', 'GitLab GitLab 12.0.12', 'GitLab GitLab 12.4.5', 'GitLab GitLab 12.7', 'GitLab GitLab 12.8.2', 'GitLab GitLab >=13.5.3;<=13.5.5', 'GitLab GitLab >=14.2.0;<=14.2.4', 'GitLab GitLab 14.3.0', 'GitLab GitLab >=10.8.0;<=10.8.7', 'GitLab GitLab 10.9.0', 'GitLab GitLab >=11.0.0;<=11.0.6', 'GitLab GitLab >=11.1.0;<=11.1.8', 'GitLab GitLab >=11.2.0;<=11.2.8', 'GitLab GitLab >=11.3.0;<=11.3.14', 'GitLab GitLab 11.4', 'GitLab GitLab >=11.4.0;<=11.4.14', 'GitLab GitLab 11.5', 'GitLab GitLab >=11.5.0;<=11.5.11', 'GitLab GitLab 11.6', 'GitLab GitLab >=11.6.0;<=11.6.11', 'GitLab GitLab 11.7', 'GitLab GitLab >=11.7.0;<=11.7.8', 'GitLab GitLab >=11.7.10;<=11.7.12', 'GitLab GitLab 11.8', 'GitLab GitLab >=11.8.0;<=11.8.10', 'GitLab GitLab 11.9', 'GitLab GitLab >=11.9.0;<=11.9.12', 'GitLab GitLab 11.10', 'GitLab GitLab >=11.10.0;<=11.10.8', 'GitLab GitLab 11.11']

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39900",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-39900"
    }
  },
  "description": "GitLab\u662f\u7f8e\u56fdGitLab\u516c\u53f8\u7684\u4e00\u6b3e\u4f7f\u7528Ruby on Rails\u5f00\u53d1\u7684\u3001\u81ea\u6258\u7ba1\u7684\u3001Git\uff08\u7248\u672c\u63a7\u5236\u7cfb\u7edf\uff09\u9879\u76ee\u4ed3\u5e93\u5e94\u7528\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u53ef\u7528\u4e8e\u67e5\u9605\u9879\u76ee\u7684\u6587\u4ef6\u5185\u5bb9\u3001\u63d0\u4ea4\u5386\u53f2\u3001Bug\u5217\u8868\u7b49\u3002 \n\nGitLab CE/EE\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u5141\u8bb8\u901a\u8fc7 Rails \u65e5\u5fd7\u516c\u5f00\u5b58\u50a8\u5728\u5bf9\u8c61\u5b58\u50a8\u4e2d\u7684\u5de5\u4ef6\u7684\u5b8c\u6574 URL\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u6682\u672a\u53d1\u5e03\u4fee\u590d\u63aa\u65bd\u89e3\u51b3\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u5efa\u8bae\u4f7f\u7528\u6b64\u8f6f\u4ef6\u7684\u7528\u6237\u968f\u65f6\u5173\u6ce8\u5382\u5546\u4e3b\u9875\u6216\u53c2\u8003\u7f51\u5740\u4ee5\u83b7\u53d6\u89e3\u51b3\u529e\u6cd5\uff1a \r\nhttps://gitlab.com/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-84596",
  "openTime": "2021-11-06",
  "products": {
    "product": [
      "GitLab GitLab 13.1.10",
      "GitLab GitLab \u003e=11.11.0;\u003c=11.11.8",
      "GitLab GitLab 11.13.14",
      "GitLab GitLab 12.0",
      "GitLab GitLab \u003e=12.0.0;\u003c=12.0.10",
      "GitLab GitLab \u003e=12.1.0;\u003c=12.1.6",
      "GitLab GitLab \u003e=12.1.8;\u003c=12.1.17",
      "GitLab GitLab \u003e=12.2.0;\u003c=12.2.12",
      "GitLab GitLab \u003e=12.3.0;\u003c=12.3.9",
      "GitLab GitLab \u003e=12.4.0;\u003c=12.4.4",
      "GitLab GitLab \u003e=12.4.6;\u003c=12.4.8",
      "GitLab GitLab \u003e=12.5.0;\u003c=12.5.10",
      "GitLab GitLab \u003e=12.6.0;\u003c=12.6.8",
      "GitLab GitLab \u003e=12.7.0;\u003c=12.7.9",
      "GitLab GitLab 12.8.0",
      "GitLab GitLab 12.8.1",
      "GitLab GitLab \u003e=12.8.3;\u003c=12.8.10",
      "GitLab GitLab 12.9",
      "GitLab GitLab \u003e=12.9.0;\u003c=12.9.10",
      "GitLab GitLab \u003e=12.10.0;\u003c=12.10.13",
      "GitLab GitLab 13.0.0",
      "GitLab GitLab 13.0.1",
      "GitLab GitLab \u003e=13.0.3;\u003c=13.0.10",
      "GitLab GitLab 13.0.12",
      "GitLab GitLab \u003e=13.1.0;\u003c=13.1.8",
      "GitLab GitLab \u003e=13.2.0;\u003c=13.2.6",
      "GitLab GitLab \u003e=13.2.8;\u003c=13.2.10",
      "GitLab GitLab \u003e=13.3.0;\u003c=13.3.2",
      "GitLab GitLab \u003e=13.3.4;\u003c=13.3.9",
      "GitLab GitLab \u003e=13.4.0;\u003c=13.4.7",
      "GitLab GitLab \u003e=13.5.0;\u003c=13.5.2",
      "GitLab GitLab 13.5.6",
      "GitLab GitLab \u003e=13.6.0;\u003c=13.6.2",
      "GitLab GitLab \u003e=13.6.4;\u003c=13.6.7",
      "GitLab GitLab \u003e=13.7.0;\u003c=13.7.9",
      "GitLab GitLab \u003e=13.8.0;\u003c=13.8.8",
      "GitLab GitLab \u003e=13.9.0;\u003c=13.9.7",
      "GitLab GitLab \u003e=13.10.0;\u003c=13.10.5",
      "GitLab GitLab \u003e=13.11.0;\u003c=13.11.7",
      "GitLab GitLab \u003e=13.12.0;\u003c=13.12.9",
      "GitLab GitLab \u003e=14.0.0;\u003c=14.0.9",
      "GitLab GitLab \u003e=14.1.0;\u003c=14.1.6",
      "GitLab GitLab 12.0.12",
      "GitLab GitLab 12.4.5",
      "GitLab GitLab 12.7",
      "GitLab GitLab 12.8.2",
      "GitLab GitLab \u003e=13.5.3;\u003c=13.5.5",
      "GitLab GitLab \u003e=14.2.0;\u003c=14.2.4",
      "GitLab GitLab 14.3.0",
      "GitLab GitLab \u003e=10.8.0;\u003c=10.8.7",
      "GitLab GitLab 10.9.0",
      "GitLab GitLab \u003e=11.0.0;\u003c=11.0.6",
      "GitLab GitLab \u003e=11.1.0;\u003c=11.1.8",
      "GitLab GitLab \u003e=11.2.0;\u003c=11.2.8",
      "GitLab GitLab \u003e=11.3.0;\u003c=11.3.14",
      "GitLab GitLab 11.4",
      "GitLab GitLab \u003e=11.4.0;\u003c=11.4.14",
      "GitLab GitLab 11.5",
      "GitLab GitLab \u003e=11.5.0;\u003c=11.5.11",
      "GitLab GitLab 11.6",
      "GitLab GitLab \u003e=11.6.0;\u003c=11.6.11",
      "GitLab GitLab 11.7",
      "GitLab GitLab \u003e=11.7.0;\u003c=11.7.8",
      "GitLab GitLab \u003e=11.7.10;\u003c=11.7.12",
      "GitLab GitLab 11.8",
      "GitLab GitLab \u003e=11.8.0;\u003c=11.8.10",
      "GitLab GitLab 11.9",
      "GitLab GitLab \u003e=11.9.0;\u003c=11.9.12",
      "GitLab GitLab 11.10",
      "GitLab GitLab \u003e=11.10.0;\u003c=11.10.8",
      "GitLab GitLab 11.11"
    ]
  },
  "referenceLink": "https://gitlab.com/gitlab-org/gitlab/-/issues/325088, https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json",
  "serverity": "\u4e2d",
  "submitTime": "2021-10-29",
  "title": "GitLab\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff08CNVD-2021-84596\uff09"
}

CVE-2021-39900 (GCVE-0-2021-39900)

Vulnerability from cvelistv5 – Published: 2021-10-04 16:45 – Updated: 2024-08-04 02:20

Summary

Information disclosure from SendEntry in GitLab starting with 10.8 allowed exposure of full URL of artifacts stored in object-storage with a temporary availability via Rails logs.

Severity

2 (Low)


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

CWE

Information exposure in GitLab

Assigner

GitLab mitre root

References

2 references

URL	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/325088	x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
GitLab	GitLab	Affected: >=10.8, <14.1.7 Affected: >=14.2, <14.2.5 Affected: >=14.3, <14.3.1

Credits

This vulnerability has been discovered internally by the GitLab team

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:20:33.699Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/325088"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "GitLab",
          "vendor": "GitLab",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=10.8, \u003c14.1.7"
            },
            {
              "status": "affected",
              "version": "\u003e=14.2, \u003c14.2.5"
            },
            {
              "status": "affected",
              "version": "\u003e=14.3, \u003c14.3.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "This vulnerability has been discovered internally by the GitLab team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Information disclosure from SendEntry in GitLab starting with 10.8 allowed exposure of full URL of artifacts stored in object-storage with a temporary availability via Rails logs."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Information exposure in GitLab",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-04T16:45:45.000Z",
        "orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
        "shortName": "GitLab"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/325088"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@gitlab.com",
          "ID": "CVE-2021-39900",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "GitLab",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003e=10.8, \u003c14.1.7"
                          },
                          {
                            "version_value": "\u003e=14.2, \u003c14.2.5"
                          },
                          {
                            "version_value": "\u003e=14.3, \u003c14.3.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "GitLab"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "This vulnerability has been discovered internally by the GitLab team"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Information disclosure from SendEntry in GitLab starting with 10.8 allowed exposure of full URL of artifacts stored in object-storage with a temporary availability via Rails logs."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 1.9,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Information exposure in GitLab"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://gitlab.com/gitlab-org/gitlab/-/issues/325088",
              "refsource": "MISC",
              "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/325088"
            },
            {
              "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json",
              "refsource": "CONFIRM",
              "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39900.json"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a",
    "assignerShortName": "GitLab",
    "cveId": "CVE-2021-39900",
    "datePublished": "2021-10-04T16:45:45.000Z",
    "dateReserved": "2021-08-23T00:00:00.000Z",
    "dateUpdated": "2024-08-04T02:20:33.699Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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.