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Vulnerability record · CVE-2026-58658 · published 15 July 2026

CVE-2026-58658: Missing authentication for critical function vulnerability

GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to access sensitive inference logs and modify worker configuration by exploiting unprotected /serveLogs and /debug endpoints on the worker port. Attackers can enumerate model instance IDs to stream serving logs containing prompts and completions, change log levels, and read memory profiling data without any authentication.

8.8 CVSS 4.0 High EPSS 0.53% · top 57.1% CWE-306 · Missing authentication for critical function Deferred
8.8CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
15 Jul 2026Last modified by NVD

Description

GPUStack through 2.2.1, fixed in commit 4e20551, contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to access sensitive inference logs and modify worker configuration by exploiting unprotected /serveLogs and /debug endpoints on the worker port. Attackers can enumerate model instance IDs to stream serving logs containing prompts and completions, change log levels, and read memory profiling data without any authentication.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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:

References

LinkTags
https://github.com/gpustack/gpustack/commit/4e20551b5aaf76f93a8769d32b7fef999e22a4d3
https://github.com/gpustack/gpustack/issues/5836
https://github.com/gpustack/gpustack/issues/5836
https://github.com/gpustack/gpustack/issues/5836
https://github.com/gpustack/gpustack/issues/5836
https://www.vulncheck.com/advisories/gpustack-unauthenticated-information-disclosure-via-worker-endpoints
https://github.com/gpustack/gpustack/issues/5836

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Source: NIST National Vulnerability Database (record CVE-2026-58658), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.