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.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements Present

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
schlagmichdoch PairDrop unaffected
Version Status Constraints
0 affected ≤ 1.11.2

No data.

No data.

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Sat, 10 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title PairDrop through 1.11.2 IP Spoofing via cf-connecting-ip Header
Weaknesses CWE-348
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-10T14:49:39.990Z

Reserved: 2026-10-10T14:39:40.699Z

Link: CVE-2026-108555

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-10T15:16:58.690

Modified: 2026-10-10T15:16:58.690

Link: CVE-2026-108555

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-10T16:30:18Z

Weaknesses