CVE-2026-49955: Hermes WebUI < 0.51.270 Resource Exhaustion via passkey/options
nesquena · hermes-webui
Fixed in 0.51.270 · Affected: nesquena hermes-webui before 0.51.270 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 48% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- nesquena · hermes-webuibefore 0.51.270
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-49955 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.