Vulnerability in Schlagmichdoch Pairdrop
CVE-2026-108555
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.
Published .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/schlagmichdoch/PairDrop/issues/510 (issue-tracking)
- github.com/schlagmichdoch/PairDrop (product)
- github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfee… (technical-description)
- github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfee… (technical-description)
- www.vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf-connect… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-108555?
- CVE-2026-108555 is a medium-severity vulnerability in Schlagmichdoch Pairdrop, classified under CWE-348. CVSS score: 4.2/10. Published 2026-10-10.
- How severe is CVE-2026-108555?
- Medium severity. CVSS v3 base score is 4.2 out of 10.