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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-49955

Hermes WebUI < 0.51.270 Resource Exhaustion via passkey/options

Description

Hermes WebUI before version 0.51.270 contains a resource exhaustion vulnerability that allows unauthenticated remote attackers to degrade service availability by repeatedly calling the passkey options endpoint without completing assertion. Attackers can send unlimited POST requests to the authentication endpoint, causing unbounded growth of the challenge store file and excessive CPU and disk I/O through repeated JSON file rewrites.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nesquena hermes-webui

Default version status: affected

  • 0 to < 0.51.270affected
pkg:github/nesquena/hermes-webui

References