Privilege Escalation Attack affecting Pelican Web UI

{
  "id": "39bfe5f8f3dba858a32d9be1bf323059e9e95857c724954064ba4576e867d95f",
  "url": "https://osv.dev/vulnerability/CVE-2026-42571",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Privilege Escalation Attack affecting Pelican Web UI",
    "summary": "Pelican is a platform for creating data federations. From versions 7.21.0 to before 7.21.5, 7.22.0 to before 7.22.3, 7.23.0 to before 7.23.3, and 7.24.0 to before 7.24.2, there is a a privilege escalation vulnerability affecting Pelican's Web User Interface (WebUI). This attack allows any user authenticated to the WebUI via OAuth to gain admin privileges under certain configurations. This issue has been patched in versions 7.21.5, 7.22.3, 7.23.3, and 7.24.2.",
    "evidence": "osv:CVE-2026-42571",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-42571",
      "aliases": [
        "CVE-2026-42571",
        "GHSA-rpfr-x88x-xwcw",
        "GO-2026-5632"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/pelicanplatform/pelican",
              "type": "GIT",
              "events": [
                {
                  "introduced": "57a0979c705beb6cb67beffff3cca99932bfbc11"
                },
                {
                  "fixed": "c5e7379b20a9a04e8e9db542a3e8b904911dc9b2"
                },
                {
                  "introduced": "074a9766f8c06e281c4fbfeb98a205f021288b56"
                },
                {
                  "fixed": "50099ea0775ff9cada8337b9dee4401085692c7f"
                },
                {
                  "introduced": "ac6a5078a96e666b39fd2fac253f2e5d6c09c91f"
                },
                {
                  "fixed": "fbd4b12e2a1ef28d1f246bc2dd7cb3a5e5831ce6"
                },
                {
                  "introduced": "eec62bac5286a1277e323a62006eda3f0ee6c245"
                },
                {
                  "fixed": "ba034ad3c09b5037a763fe824d04de163e792e1f"
                },
                {
                  "fixed": "7f73b9c3e677a0ae4a0ec465c5d98bb8bd948854"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "7.21.0"
                      },
                      {
                        "fixed": "7.21.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "7.22.0"
                      },
                      {
                        "fixed": "7.22.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "7.23.0"
                      },
                      {
                        "fixed": "7.23.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "7.24.0"
                      },
                      {
                        "fixed": "7.24.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7f73b9c3e677a0ae4a0ec465c5d98bb8bd948854"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v7.21.5-rc.0",
            "v7.22.3-rc.0",
            "v7.23.3-rc.0",
            "v7.24.2-rc.0",
            "v7.23.2",
            "v7.22.2",
            "v7.21.4",
            "v7.24.1",
            "v7.23.1",
            "v7.22.1",
            "v7.24.0",
            "v7.21.3",
            "v7.21.2",
            "v7.23.0",
            "v7.23.1-rc.0",
            "v7.22.1-rc.5",
            "v7.22.1-rc.4",
            "v7.22.1-rc.3",
            "v7.22.1-rc.2",
            "v7.22.1-rc.1",
            "v7.22.1-rc.0",
            "v7.22.0",
            "v7.21.2-rc.4",
            "v7.21.2-rc.3",
            "v7.21.2-rc.2",
            "v7.21.2-rc.1",
            "v7.21.2-rc.0",
            "v7.21.1",
            "v7.21.1-rc.0",
            "v7.21.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42571.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.282595070Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42571.json",
        "https://github.com/PelicanPlatform/pelican/security/advisories/GHSA-rpfr-x88x-xwcw",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-42571",
        "https://github.com/PelicanPlatform/pelican/commit/7f73b9c3e677a0ae4a0ec465c5d98bb8bd948854"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42571.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-42571",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493853,
  "published_at": "2026-05-09T19:19:36.522+00:00"
}