{"id":"CVE-2026-73226","state":"PUBLISHED","title":"Electerm WebSocket `upgrade-func` and `fs` handlers allow arbitrary method/function invocation due to missing method-name allowlist","description":"electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.186, electerm allows an authenticated WebSocket client to invoke unintended internal functions through client-controlled func values in upgrade-func in src/app/server/dispatch-center.js and handleFs in src/app/server/fs.js, exposing Upgrade and fsExport methods that can execute commands, open files, mutate the filesystem, or terminate the process. This issue is fixed in version 3.15.186.","publishedAt":"2026-08-11T18:44:01.610Z","updatedAt":"2026-08-11T20:05:46.743Z","severity":{"score":8.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["electerm electerm"],"affected":[{"vendor":"electerm","product":"electerm","versions":[{"version":"< 3.15.186","status":"affected"}]}],"references":["https://github.com/electerm/electerm/security/advisories/GHSA-8chw-jwc5-8587","https://github.com/electerm/electerm/pull/4447","https://github.com/electerm/electerm/commit/b1729eb67a4cd9cf1182de69dc2c8e051931740f","https://github.com/electerm/electerm/releases/tag/v3.15.186"],"weaknesses":["CWE-913"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73226.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73226","state":"PUBLISHED","datePublished":"2026-08-11T18:44:01.610Z","dateUpdated":"2026-08-11T20:05:46.743Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-11T14:41:20.122Z"},"containers":{"cna":{"title":"Electerm WebSocket `upgrade-func` and `fs` handlers allow arbitrary method/function invocation due to missing method-name allowlist","descriptions":[{"lang":"en","value":"electerm is an open-sourced terminal/ssh/sftp/telnet/serialport/RDP/VNC/Spice/ftp client. Prior to 3.15.186, electerm allows an authenticated WebSocket client to invoke unintended internal functions through client-controlled func values in upgrade-func in src/app/server/dispatch-center.js and handleFs in src/app/server/fs.js, exposing Upgrade and fsExport methods that can execute commands, open files, mutate the filesystem, or terminate the process. This issue is fixed in version 3.15.186."}],"affected":[{"vendor":"electerm","product":"electerm","versions":[{"version":"< 3.15.186","status":"affected"}]}],"references":[{"url":"https://github.com/electerm/electerm/security/advisories/GHSA-8chw-jwc5-8587","name":"https://github.com/electerm/electerm/security/advisories/GHSA-8chw-jwc5-8587","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/electerm/electerm/pull/4447","name":"https://github.com/electerm/electerm/pull/4447","tags":["x_refsource_MISC"]},{"url":"https://github.com/electerm/electerm/commit/b1729eb67a4cd9cf1182de69dc2c8e051931740f","name":"https://github.com/electerm/electerm/commit/b1729eb67a4cd9cf1182de69dc2c8e051931740f","tags":["x_refsource_MISC"]},{"url":"https://github.com/electerm/electerm/releases/tag/v3.15.186","name":"https://github.com/electerm/electerm/releases/tag/v3.15.186","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-913","lang":"en","description":"CWE-913: Improper Control of Dynamically-Managed Code Resources","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-11T18:44:01.610Z"},"source":{"advisory":"GHSA-8chw-jwc5-8587","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T20:05:25.435000Z","id":"CVE-2026-73226","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T20:05:46.743Z"}}]}}}