Vikunja: Link-share principal-type confusion enables cross-account team removal, bot takeover, and roster disclosure in code.vikunja.io/api

{
  "id": "df76defab345f749443f75b80c767b3d22d6b4d71b82286e85fb396aae4417d8",
  "url": "https://osv.dev/vulnerability/GO-2026-6711",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vikunja: Link-share principal-type confusion enables cross-account team removal, bot takeover, and roster disclosure in code.vikunja.io/api",
    "summary": "Vikunja: Link-share principal-type confusion enables cross-account team removal, bot takeover, and roster disclosure in code.vikunja.io/api",
    "evidence": "osv:GO-2026-6711",
    "products": [
      {
        "name": {
          "value": "code.vikunja.io/api",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "GO-2026-6711",
      "aliases": [
        "CVE-2026-76216",
        "GHSA-32r8-5843-4qw2",
        "GO-2026-6711"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "code.vikunja.io/api",
            "purl": "pkg:golang/code.vikunja.io/api",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://vuln.go.dev/ID/GO-2026-6711.json"
          },
          "ecosystem_specific": {}
        }
      ],
      "modified": "2026-10-19T21:31:36.956679465Z",
      "provider": "osv",
      "references": [
        "https://github.com/go-vikunja/vikunja/security/advisories/GHSA-32r8-5843-4qw2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-76216",
        "https://www.vulncheck.com/advisories/vikunja-through-principal-type-confusion-via-linksharing"
      ],
      "provider_metadata": {
        "url": "https://pkg.go.dev/vuln/GO-2026-6711",
        "review_status": "UNREVIEWED"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-76216",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 376550,
  "published_at": "2026-10-19T21:08:26+00:00"
}