{"id":"CVE-2026-111728","state":"PUBLISHED","title":"Seanime v3.10.3 Argument Injection via TranscodeHwAccelCustomSettings","description":"Seanime v3.7.0 to v3.10.3 contains an argument injection vulnerability reachable through improper authorization, allowing unauthenticated LAN or Tailnet clients to bypass the privileged mediastream settings guard by setting transcodeHwAccel to custom and supplying attacker-controlled decodeFlags and encodeFlags via the transcodeHwAccelCustomSettings field, which are appended verbatim to the ffmpeg argument vector. Attackers can trigger execution via the mediastream request and HLS playlist endpoints to achieve arbitrary file write and file truncation on the host as the user running seanime, with the injected input options also enabling potential arbitrary local file read and outbound data exfiltration through ffmpeg's protocol handlers.","publishedAt":"2026-10-16T15:02:08.025Z","updatedAt":"2026-10-16T17:06:38.459Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["5rahim Seanime"],"affected":[{"vendor":"5rahim","product":"Seanime","defaultStatus":"unaffected","versions":[{"version":"3.7.0","status":"affected","lessThan":"3.10.4","versionType":"semver"}]}],"references":["https://github.com/5rahim/seanime/commit/d7b13706da236473f33163b1222eb09587e93388","https://github.com/5rahim/seanime","https://www.vulncheck.com/advisories/seanime-argument-injection-via-transcodehwaccelcustomsettings"],"weaknesses":["CWE-88"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/111xxx/CVE-2026-111728.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111728","state":"PUBLISHED","datePublished":"2026-10-16T15:02:08.025Z","dateUpdated":"2026-10-16T17:06:38.459Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-16T14:56:48.652Z"},"containers":{"cna":{"title":"Seanime v3.10.3 Argument Injection via TranscodeHwAccelCustomSettings","descriptions":[{"lang":"en","value":"Seanime v3.7.0 to v3.10.3 contains an argument injection vulnerability reachable through improper authorization, allowing unauthenticated LAN or Tailnet clients to bypass the privileged mediastream settings guard by setting transcodeHwAccel to custom and supplying attacker-controlled decodeFlags and encodeFlags via the transcodeHwAccelCustomSettings field, which are appended verbatim to the ffmpeg argument vector. Attackers can trigger execution via the mediastream request and HLS playlist endpoints to achieve arbitrary file write and file truncation on the host as the user running seanime, with the injected input options also enabling potential arbitrary local file read and outbound data exfiltration through ffmpeg's protocol handlers."}],"affected":[{"vendor":"5rahim","product":"Seanime","defaultStatus":"unaffected","versions":[{"version":"3.7.0","status":"affected","lessThan":"3.10.4","versionType":"semver"}]}],"references":[{"url":"https://github.com/5rahim/seanime/commit/d7b13706da236473f33163b1222eb09587e93388","tags":["patch"]},{"url":"https://github.com/5rahim/seanime","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/seanime-argument-injection-via-transcodehwaccelcustomsettings","name":"VulnCheck Advisory: Seanime v3.10.3 Argument Injection via TranscodeHwAccelCustomSettings","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"ADJACENT","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","version":"3.1","baseSeverity":"MEDIUM","baseScore":5.4,"vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-16T15:02:08.025Z"},"datePublic":"2026-10-14T00:00:00.000Z","credits":[{"lang":"en","value":"Xumoyunbek Obidjonov","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"vulncheck"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-16T16:32:01.070683Z","id":"CVE-2026-111728","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-16T17:06:38.459Z"}}]}}}