cal.com Repository Takeover via pull_request_target Workflow

{
  "id": "685ef5bbb332bb7cae752c255a49a9655d72b69e1d0a880777367da5d9a5b7e4",
  "url": "https://osv.dev/vulnerability/CVE-2024-58354",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "cal.com Repository Takeover via pull_request_target Workflow",
    "summary": "cal.com (calcom repository, later renamed cal.diy) is affected by a repository takeover vulnerability in its GitHub Actions workflows. The workflow pr.yml uses the pull_request_target trigger with the repository's default write permissions and passes them down to check-types.yml. check-types.yml then performs a 'dangerous' checkout of the attacker-submitted pull request code (via the dangerous-git-checkout action) and subsequently executes it (through yarn install and package.json scripts). An attacker can open a pull request whose code runs arbitrary commands with the repository's write-scoped GITHUB_TOKEN, allowing them to push commits, merge or mutate pull requests, add or delete comments, and delete or force-push branches, thereby compromising the repository. The main branch is affected; no patched version is available.",
    "evidence": "osv:CVE-2024-58354",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2024-58354",
      "aliases": [
        "CVE-2024-58354",
        "GHSA-p3f6-52gv-cj7m"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/calcom/cal.diy",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9aa60fae41a6b6b101c86bf430754b439f440871"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "9aa60fae41a6b6b101c86bf430754b439f440871"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-58354.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.031168939Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58354.json",
        "https://github.com/calcom/cal.diy/security/advisories/GHSA-p3f6-52gv-cj7m",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-58354",
        "https://www.vulncheck.com/advisories/cal-com-repository-takeover-via-pull-request-target-workflow",
        "https://github.com/calcom/cal.diy/commit/9aa60fae41a6b6b101c86bf430754b439f440871"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-77"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/58xxx/CVE-2024-58354.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-58354",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 511732,
  "published_at": "2026-07-23T21:16:43.545+00:00"
}