Deskflow: Clipboard receiver can accumulate data beyond Deskflow's configured clipboard size limit

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-65976
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 21:16:47 UTC
Updated2026-08-18 18:19:22 UTC
DescriptionDeskflow is a keyboard and mouse sharing app. From 1.17.0 until continuous build 1.26.0.300, a connected peer can send repeated DCLP DataChunk messages to ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp, causing the server path in src/lib/server/ClientProxy1_6.cpp or client path in src/lib/client/ServerProxy.cpp to append data beyond the DataStart declared size and configured clipboard limit before DataEnd validation, exhausting receiver memory. This issue is fixed in continuous build 1.26.0.300.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 0.003150000 probability, percentile 0.242110000 (date 2026-08-18)

Problem Types: CWE-400 | CWE-400 CWE-400: Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Deskflow Deskflow affected >= 1.17.0, < 1.26.0.300 Not specified

References

ReferenceSourceLinkTags
github.com/deskflow/deskflow/security/advisories/GHSA-jf7g-qghg-p54x [email protected] github.com
github.com/deskflow/deskflow/commit/8a535fd5dd48315eaaf6b93d5c7534d0592a... [email protected] github.com
github.com/deskflow/deskflow/commit/bcd3a658fc3b2ad735146fdc9efefa9462d1... [email protected] github.com
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