CVE-2026-55205 - Hermes WebUI < 0.51.468 - Resource Exhaustion via Unauthenticated OAuth Flow Endpoint

CVE ID :CVE-2026-55205
Published : June 18, 2026, 3:49 p.m. | 1 hour, 43 minutes ago
Description :Hermes WebUI before 0.51.468 contains a resource exhaustion vulnerability in the unauthenticated POST /api/onboarding/oauth/start endpoint that allows unbounded accumulation of in-memory flow state and daemon threads. Attackers can send repeated or concurrent requests to exhaust server memory and thread resources, potentially triggering repeated outbound device-code requests to upstream OAuth providers.
Severity: 6.9 | MEDIUM
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Maloy Roy Orko

I am Maloy Roy Orko. An aspiring security researcher. Learning New Fields and Strategies Since 2019. 💻

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