CVE-2026-46538

Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO's constellation client tracks pending task responses by session_id only and does not verify that a TASK_END message came from the device that originally received the task. When the constellation sends a task to a target device, it records a pending Future under a session key. The pending task record stores the expected device ID, but the completion path ignores that binding. If another authenticated peer device sends a forged TASK_END with the same session_id, the constellation accepts the response and completes the victim device's pending Future with attacker-controlled result data. This is an authenticated cross-device task-result injection issue.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/microsoft/UFO/security/advisories/GHSA-wmq2-74rj-7pjc
https://github.com/microsoft/UFO/security/advisories/GHSA-wmq2-74rj-7pjc

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-27 23:16

Updated : 2026-06-17 10:53

NVD link : CVE-2026-46538

Mitre link : CVE-2026-46538

CVE.ORG link : CVE-2026-46538

JSON object : View

Products Affected

No product.

CWE

CWE-294

Authentication Bypass by Capture-replay

CWE-345

Insufficient Verification of Data Authenticity

{"id": "CVE-2026-46538", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-46538", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-28T12:37:58.013066Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 1.6}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "microsoft", "product": "UFO", "versions": [{"status": "affected", "version": "3.0.1-4-ge2626659"}]}]}], "published": "2026-05-27T23:16:48.107", "references": [{"url": "https://github.com/microsoft/UFO/security/advisories/GHSA-wmq2-74rj-7pjc", "source": "security-advisories@github.com"}, {"url": "https://github.com/microsoft/UFO/security/advisories/GHSA-wmq2-74rj-7pjc", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-294"}, {"lang": "en", "value": "CWE-345"}]}], "descriptions": [{"lang": "en", "value": "Microsoft UFO open-source framework for intelligent automation across devices and platforms. In 3.0.1-4-ge2626659, Microsoft UFO's constellation client tracks pending task responses by session_id only and does not verify that a TASK_END message came from the device that originally received the task. When the constellation sends a task to a target device, it records a pending Future under a session key. The pending task record stores the expected device ID, but the completion path ignores that binding. If another authenticated peer device sends a forged TASK_END with the same session_id, the constellation accepts the response and completes the victim device's pending Future with attacker-controlled result data. This is an authenticated cross-device task-result injection issue."}], "lastModified": "2026-06-17T10:53:45.653", "sourceIdentifier": "security-advisories@github.com"}