CVE-2026-58658: Missing Auth (CVSS 8.2)

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.

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CVSS v3.1 Score

8.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

EPSS — Exploit Prediction

0.0039

Probability of exploitation

0.31%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-306 Missing Authentication

References

Other References

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

Frequently Asked Questions

What is CVE-2026-58658? +

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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-58658? +

CVE-2026-58658 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0039, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-58658? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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