busy Callback app.js redirect

{
  "id": "7cec2df4161ed7ac2bb30fca503a8c7a055ae5b3797944307cd2a58de2ef9240",
  "url": "https://osv.dev/vulnerability/CVE-2026-2709",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "busy Callback app.js redirect",
    "summary": "A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
    "evidence": "osv:CVE-2026-2709",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-2709",
      "aliases": [
        "CVE-2026-2709"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/busyorg/busy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "27dd2383806eda8daf46748cbbbb26739d08ced4"
                },
                {
                  "last_affected": "d85beaf132b98710553711022c2b8e7c1a5140c9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "2.5.0"
                      },
                      {
                        "last_affected": "2.5.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.5.1"
                      },
                      {
                        "last_affected": "2.5.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.5.2"
                      },
                      {
                        "last_affected": "2.5.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.5.3"
                      },
                      {
                        "last_affected": "2.5.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.5.4"
                      },
                      {
                        "last_affected": "2.5.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "2.5.5"
                      },
                      {
                        "last_affected": "2.5.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.5.5"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.5.0",
            "2.5.1",
            "2.5.2",
            "2.5.3",
            "2.5.4",
            "2.5.5",
            "v2.5.5",
            "v2.5.4",
            "v2.5.3",
            "v2.5.2",
            "v2.5.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-2709.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.222319079Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2709.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-2709",
        "https://vuldb.com/?id.346661",
        "https://vuldb.com/?submit.753299",
        "https://github.com/busyorg/busy/issues/2287",
        "https://github.com/busyorg/busy/issues/2287#issue-3905518966",
        "https://vuldb.com/?ctiid.346661"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-601"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/2xxx/CVE-2026-2709.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-2709",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514192,
  "published_at": "2026-02-19T06:32:06.498+00:00"
}