CVE-2026-23517 (GCVE-0-2026-23517)

Vulnerability from cvelistv5 – Published: 2026-01-21 21:45 – Updated: 2026-01-22 16:49
VLAI
Title
Fleet has an Access Control vulnerability in debug/pprof endpoints
Summary
Fleet is open source device management software. A broken access control issue in versions prior to 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 allowed authenticated users to access debug and profiling endpoints regardless of role. As a result, low-privilege users could view internal server diagnostics and trigger resource-intensive profiling operations. Fleet’s debug/pprof endpoints are accessible to any authenticated user regardless of role, including the lowest-privilege “Observer” role. This allows low-privilege users to access sensitive server internals, including runtime profiling data and in-memory application state, and to trigger CPU-intensive profiling operations that could lead to denial of service. Versions 4.78.3, 4.77.1, 4.76.2, 4.75.2, and 4.53.3 fix the issue. If an immediate upgrade is not possible, users should put the debug/pprof endpoints behind an IP allowlist as a workaround.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 15:10 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
fleetdm fleet Affected: >= 4.78.0, < 4.78.3
Affected: >= 4.77.0, < 4.77.1
Affected: >= 4.76.0, < 4.76.2
Affected: >= 4.75.0, < 4.75.2
Affected: < 4.53.3
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