{"id":"CVE-2026-41476","state":"PUBLISHED","title":"Deskflow: clipboard deserialization global-buffer-overflow","description":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138.","publishedAt":"2026-04-24T19:47:45.316Z","updatedAt":"2026-04-24T20:15:40.568Z","severity":{"score":7.4,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","source":"GitHub_M"},"assigner":"GitHub_M","products":["deskflow deskflow"],"affected":[{"vendor":"deskflow","product":"deskflow","versions":[{"version":"< 1.26.0.138","status":"affected"}]}],"references":["https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh"],"weaknesses":["CWE-120"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41476.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41476","state":"PUBLISHED","datePublished":"2026-04-24T19:47:45.316Z","dateUpdated":"2026-04-24T20:15:40.568Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-20T16:14:19.005Z"},"containers":{"cna":{"title":"Deskflow: clipboard deserialization global-buffer-overflow","descriptions":[{"lang":"en","value":"Deskflow is a keyboard and mouse sharing app.  Prior to 1.26.0.138, a remote memory-safety vulnerability in Deskflow's clipboard deserialization allows a connected peer to trigger an out-of-bounds read by sending a malformed clipboard update. The issue is in the implementation of src/lib/deskflow/IClipboard.cpp. This is reachable because ClipboardChunk::assemble() in src/lib/deskflow/ClipboardChunk.cpp validates only the outer clipboard transfer size. It does not validate the internal structure of the serialized clipboard blob, so malformed inner lengths reach IClipboard::unmarshall() unchanged. This vulnerability is fixed in 1.26.0.138."}],"affected":[{"vendor":"deskflow","product":"deskflow","versions":[{"version":"< 1.26.0.138","status":"affected"}]}],"references":[{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh","name":"https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.4,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","lang":"en","description":"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-24T19:47:45.316Z"},"source":{"advisory":"GHSA-3jp5-g964-cgmh","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/deskflow/deskflow/security/advisories/GHSA-3jp5-g964-cgmh","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-24T20:15:14.472198Z","id":"CVE-2026-41476","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-24T20:15:40.568Z"}}]}}}