CVE-2026-23517
highpriority · track · 32OT risk · elevatedEPSS 0.003 · 22 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.3–8.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (19)
Products and version ranges known to be affected.
- Go github.com/fleetdm/fleet/v4< 4.78.3-0.20260112221730-5c030e32a3a9osvUSpkg:golang/github.com/fleetdm/fleet/v4
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-4r5r-ccr6-q6f6Fleet has an Access Control vulnerability in debug/pprof endpoints2026-01-20ghsa · osvUS
### Summary A broken access control issue in Fleet 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. ### Impact 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. ### Patches - 4.78.3 - 4.77.1 - 4.76.2 - 4.75.2 - 4.53.3 ### Workarounds If an immediate upgrade is not possible, users should put the debug/pprof endpoints behind an IP allowlist. ### For more information If you have any questions or comments about this advisory: Email us at [security@fleetdm.com](mailto:security@fleetdm.com) Join #fleet in [osquery Slack](https://join.slack.com/t/osquery/shared_invite/zt-h29zm0gk-s2DBtGUTW4CFel0f0IjTEw) ### Credits We thank @secfox-ai for responsibly reporting this issue.
- GO-2026-4334Fleet has an Access Control vulnerability in debug/pprof endpoints in github.com/fleetdm/fleet2026-02-03vendor · osvUS
Fleet has an Access Control vulnerability in debug/pprof endpoints in github.com/fleetdm/fleet
also known as (5)
Other names and identifiers for this entity.
sources
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references (8)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-23517cnnvd
- https://github.com/fleetdm/fleet/commit/5c030e32a3a9bc512355b5e1bf19636e4e6d0317cnnvd
- https://github.com/fleetdm/fleet/releasesPatchcnnvd
- https://github.com/fleetdm/fleet/security/advisories/GHSA-4r5r-ccr6-q6f6cnnvd
- https://github.com/fleetdm/fleet/commit/5c030e32a3a9bc512355b5e1bf19636e4e6d0317enisa_euvd
- https://github.com/fleetdm/fleet/security/advisories/GHSA-4r5r-ccr6-q6f6enisa_euvd
- https://github.com/fleetdm/fleet/commit/5c030e32a3a9bc512355b5e1bf19636e4e6d0317Patchnvd
- https://github.com/fleetdm/fleet/security/advisories/GHSA-4r5r-ccr6-q6f6Vendor Advisorynvd
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