CVE-2026-55440

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{"affected": [{"affectedData": [{"product": "UFO", "vendor": "microsoft", "versions": [{"status": "affected", "version": "< 3.0.7"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.7, the COMMAND_RESULTS handler in ufo/server/ws/handler.py called get_or_create_session in ufo/server/services/session_manager.py without owner_client_id, allowing an authenticated client to create an unowned attacker-chosen session_id such as constellation_task_id = f\"{task_name}@{task_id}\" and deny the legitimate owner or exhaust memory with phantom sessions. This issue is fixed in version 3.0.7."}, {"lang": "es", "value": "Microsoft UFO framework de c\u00f3digo abierto para automatizaci\u00f3n inteligente en dispositivos y plataformas. Antes de la versi\u00f3n 3.0.7, el gestor COMMAND_RESULTS en ufo/server/ws/handler.py llamaba a get_or_create_session en ufo/server/services/session_manager.py sin owner_client_id, permitiendo a un cliente autenticado crear un session_id no pose\u00eddo y elegido por el atacante, como constellation_task_id = f\u2019{task_name}@{task_id}\u2019, y denegar al propietario leg\u00edtimo o agotar la memoria con sesiones fantasma. Este problema est\u00e1 solucionado en la versi\u00f3n 3.0.7."}], "id": "CVE-2026-55440", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-55440", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-16T16:23:07.186935Z", "version": "2.0.3"}}]}, "published": "2026-07-16T16:19:13.787", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/microsoft/UFO/commit/cc653bde75337ab60c320e6b7cb61b86ba6ca948"}, {"source": "security-advisories@github.com", "url": "https://github.com/microsoft/UFO/releases/tag/3.0.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/microsoft/UFO/security/advisories/GHSA-hxjv-fmjf-wmjf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.0.7)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "UFO", "source": "cna", "vendor": "microsoft"}, "product": "ufo", "vendor": "microsoft"}], "created": "2026-07-16T17:30:03.002564+00:00", "updated": "2026-07-31T02:00:05.498762+00:00", "vendors": ["microsoft", "microsoft$PRODUCT$ufo"]}