EUVD-2026-93776
GHSA-5vj7-2qvg-fh38
Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Adjacent cluster-network access (AV:A), no auth on the metrics listener (PR:N); heap dumps can expose DB credentials so C:H (higher than vendor C:L), and CPU-profiling abuse gives A:H.
Primary rating from Vendor (redhat).
CVSS VectorVendor: redhat
Lifecycle Timeline
2DescriptionCVE.org
A flaw was found in postgres-exporter. Due to the blank import of net/http/pprof, debug endpoints are exposed on the unauthenticated metrics listener. A remote attacker within the cluster network can access these endpoints. This allows for information disclosure, potentially revealing process arguments, full goroutine stacks, and sensitive data like database connection strings or passwords from heap dumps. Additionally, repeated CPU profiling through these endpoints can lead to a denial of service.
Articles & Coverage 1
AnalysisAI
Unauthenticated Go pprof debug endpoints exposed on the postgres-exporter metrics listener let any attacker who can reach that port from inside the cluster network read process arguments, full goroutine stacks, and heap memory - potentially leaking database connection strings and credentials - and repeatedly trigger CPU profiling to exhaust resources in a denial-of-service condition. The flaw is tracked as CVE-2026-83550 (CVSS 7.1, AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H per the vendor, C:H for confidentiality in our assessment) and affects postgres-exporter as shipped in Red Hat Multicluster Global Hub, where the CPE covers all tracked versions; exploitation requires adjacent/cluster network reachability rather than internet exposure. …
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Attack ChainAIDerived
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Vulnerability AssessmentAI
| Exploitation | Exploitation requires network reachability to the postgres-exporter metrics listener port, on which the Go pprof debug handlers (/debug/pprof/*) are registered by the blank import of net/http/pprof and served without authentication. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a legitimate but moderate-priority issue, best characterized as a real design flaw rather than a critical emergency. … 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 | No vendor-released patch is identified at time of analysis; track the Red Hat advisory at https://access.redhat.com/security/cve/CVE-2026-83550 and Bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=2526444 for the fixed Multicluster Global Hub build, and upgrade as soon as an errata is published. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every Red Hat Multicluster Global Hub deployment that includes the bundled postgres-exporter and determine whether its metrics listener (commonly port 9187) is reachable beyond the local monitoring namespace; where it is, apply a default-deny NetworkPolicy to that namespace and explicitly allow only the Prometheus/monitoring pods that must scrape it, and block the Go pprof debug paths (for example /debug/pprof/) at the ingress or sidecar layer while the port remains reachable. …
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