{"id":"CVE-2026-108555","title":"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","summary":"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 …","severity":"medium","cvss":4.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-348"],"published":"2026-10-10","updated":"2026-10-10","sourceUpdated":"2026-10-10T15:16:58.690","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108555","references":[{"url":"https://github.com/schlagmichdoch/PairDrop","label":"disclosure@vulncheck.com"},{"url":"https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/peer.js#L44-L54","label":"disclosure@vulncheck.com"},{"url":"https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/ws-server.js#L312-L314","label":"disclosure@vulncheck.com"},{"url":"https://github.com/schlagmichdoch/PairDrop/issues/510","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf-connecting-ip-header","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"ingestedAt":"2026-10-10T15:25:58.089Z","slug":"CVE-2026-108555","body":"## Overview\n\nPairDrop 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":23.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}