{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.11.2"
              },
              {
                "fixed": "1.11.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4862ba3067be1a0f2e0d1e94861dc9200b5bfeea"
            }
          ],
          "repo": "https://github.com/schlagmichdoch/pairdrop",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-348"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108555.json"
  },
  "details": "PairDrop through 1.11.2 contains an IP spoofing vulnerability in Peer._setIP that allows remote attackers to join other networks' discovery rooms by supplying a forged cf-connecting-ip header. Attackers who know a victim's public IP can appear as a local device on self-hosted instances not behind Cloudflare to send or receive files.",
  "id": "CVE-2026-108555",
  "modified": "2026-10-15T02:30:40.942044057Z",
  "published": "2026-10-10T14:49:39.990Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108555.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-108555"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf-connecting-ip-header"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/schlagmichdoch/PairDrop/issues/510"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/schlagmichdoch/PairDrop"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/peer.js#L44-L54"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/ws-server.js#L312-L314"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PairDrop through 1.11.2 IP Spoofing via cf-connecting-ip Header"
}