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.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/schlagmichdoch/PairDrop
https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/peer.js#L44-L54
https://github.com/schlagmichdoch/PairDrop/blob/4862ba3067be1a0f2e0d1e94861dc9200b5bfeea/server/ws-server.js#L312-L314
https://github.com/schlagmichdoch/PairDrop/issues/510
https://www.vulncheck.com/advisories/pairdrop-through-1.11.2-ip-spoofing-via-cf-connecting-ip-header

Configurations

No configuration.

History

10 Oct 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-10 15:16

Updated : 2026-10-16 19:18

NVD link : CVE-2026-108555

Mitre link : CVE-2026-108555

CVE.ORG link : CVE-2026-108555

JSON object : View

Products Affected

No product.

CWE

CWE-348

Use of Less Trusted Source

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