EUVD-2026-63587
GHSA-fwg2-3f5m-7xx2
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local attack requiring only a standard user account; no scope change as subsequent-system impact is absent per CVSS 4.0 source data.
Primary rating from Vendor (Fluid Attacks).
CVSS VectorVendor: Fluid Attacks
Lifecycle Timeline
1DescriptionCVE.org
NoSleep 1.5.1 exposes a privileged XPC Mach service and accepts raw dictionary messages containing attacker-controlled command and NSBundlePath values.This issue affects NoSleep: 1.5.1.
AnalysisAI
Unauthorized XPC Mach service access in NoSleep 1.5.1 on macOS allows a local low-privileged attacker to send arbitrary dictionary messages - including attacker-controlled command and NSBundlePath values - to a privileged daemon without authorization. The root cause is CWE-862 (Missing Authorization), meaning the XPC service performs no caller identity check before processing requests. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a local user account on a macOS system running NoSleep 1.5.1 - the CVSS 4.0 vector (AV:L/PR:L) confirms local access with low privileges is the baseline requirement. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 with vector AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N characterizes this as a locally exploitable vulnerability requiring only a standard user account with no special attack requirements and no user interaction, yielding high confidentiality and low integrity impact on the vulnerable system with no scope change to subsequent systems. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | The primary remediation is to upgrade away from NoSleep 1.5.1 once a patched release is available; no vendor-released patched version has been independently confirmed at time of analysis - consult the upstream GitHub repository at https://github.com/integralpro/nosleep/ and the Fluid Attacks advisory at https://fluidattacks.com/advisories/iggy for patch status. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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