Security advisory

{
  "id": "19fcb148430fb68ee50dd30b3e9d7fb572a57ecf8cc58ae434d9dbadf691d313",
  "url": "https://osv.dev/vulnerability/CVE-2021-45379",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-45379",
    "summary": "Glewlwyd 2.0.0, fixed in 2.6.1 is affected by an incorrect access control vulnerability. One user can attempt to log in as another user without its password.",
    "evidence": "osv:CVE-2021-45379",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-45379",
      "aliases": [
        "CVE-2021-45379"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/babelouest/glewlwyd",
              "type": "GIT",
              "events": [
                {
                  "introduced": "9ff7a039b873666099ad306bef0c13082902d39a"
                },
                {
                  "fixed": "a7ddc5b3c2981cf15fc477fbd12397afcc559e4b"
                },
                {
                  "fixed": "125281f1c0d4b6a8b49f7e55a757205a2ef01fbe"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:glewlwyd_project:glewlwyd:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.0.0"
                      },
                      {
                        "fixed": "2.6.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "125281f1c0d4b6a8b49f7e55a757205a2ef01fbe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a7ddc5b3c2981cf15fc477fbd12397afcc559e4b"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.6.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.6.0",
            "v2.5.3",
            "v2.5.2",
            "v2.5.1",
            "v2.5.0",
            "v2.4.0",
            "v2.3.2",
            "v2.3.1",
            "v2.3.0",
            "v2.2.0",
            "v2.1.1",
            "v2.1.0",
            "v2.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-45379.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-45379-262cbb68",
                "digest": {
                  "length": 7507,
                  "function_hash": "287385179160249100524275443818706698966"
                },
                "source": "https://github.com/babelouest/glewlwyd/commit/125281f1c0d4b6a8b49f7e55a757205a2ef01fbe",
                "target": {
                  "file": "src/webservice.c",
                  "function": "callback_glewlwyd_user_auth"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2021-45379-c09008b9",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "160032509845577399718325785668694135536",
                    "159314386650147664546478821949250439871",
                    "97272558064739958032241681553684032162",
                    "318688609422231976619580614058765167857",
                    "21727593704607572632123644709356901167",
                    "311966006849433527990035948850796334565",
                    "87472205284720780937743638570090968232"
                  ]
                },
                "source": "https://github.com/babelouest/glewlwyd/commit/125281f1c0d4b6a8b49f7e55a757205a2ef01fbe",
                "target": {
                  "file": "src/webservice.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T14:30:20Z"
          }
        }
      ],
      "modified": "2026-10-20T14:30:20.645842129Z",
      "provider": "osv",
      "references": [
        "https://github.com/babelouest/glewlwyd/releases/tag/v2.6.1",
        "https://github.com/babelouest/glewlwyd/commit/125281f1c0d4b6a8b49f7e55a757205a2ef01fbe"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-45379",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 389234,
  "published_at": "2021-12-30T18:15:07.463+00:00"
}