Vulnerability · Published Aug 17, 2026 · Assigned by GitHub_M
CVE-2026-65976Deskflow: Clipboard receiver can accumulate data beyond Deskflow's configured clipboard size limit
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in deskflow from deskflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Deskflow 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | deskflow | no fix listed | DEBIAN-CVE-2026-65976 |
| Debian:14 | deskflow | 1.26.0+dfsg-4 | DEBIAN-CVE-2026-65976 |
| Ubuntu:26.04:LTS | deskflow | no fix listed | UBUNTU-CVE-2026-65976 |
| Ubuntu:26.10 | deskflow | no fix listed | UBUNTU-CVE-2026-65976 |
Affected products (as reported)
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H