CVE-2026-108555
PairDrop through 1.11.2 IP Spoofing via cf-connecting-ip Header
schlagmichdoch PairDrop
CVSS
2.3LowExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.14%Chance of exploitation activity in the next 30 days, higher than 2% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- PairDropaffected: all versions through 1.11.2CVE List
References 5
- vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf-connecting-ip-headerAdvisoryvia CVE List
- github.com/schlagmichdoch/PairDrop/issues/510Referencevia CVE List
- github.com/schlagmichdoch/PairDropReferencevia CVE List
- github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/peer.js#L44-L54Referencevia CVE List
- github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/ws-server.js#L312-L314Referencevia CVE List