CVE•Published 2026-06-17•Modified 2026-09-17•1 article on news•4 live references•NVD data
CVE-2026-55196
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
EPSS percentile
46
Exploit Prediction Scoring System · top 54% of all CVEs
Weaknesses (CWE)
Description
Hermes WebUI before 0.51.409 contains an authentication bypass vulnerability in passkey registration endpoints that allows unauthenticated remote attackers to register arbitrary passkeys. When HERMES_WEBUI_PASSKEY=1 is enabled with no existing credentials, POST /api/auth/passkey/register/options and POST /api/auth/passkey/register endpoints are accessible without authentication, allowing attackers to claim the first passkey and gain permanent administrative control.
Timeline
Published 2026-06-17
Modified 2026-09-17
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-55196Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-55196Censys host search filtered to this CVE id.
grep.app
CVE-2026-55196Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-55196GitHub code search for direct mentions.
Google dork
"CVE-2026-55196" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-55196 on GitHub.