VULNERABILITY INTELLIGENCE
CVE-2026-49973
CVSS score9.4 CRITICAL
EPSS probability0.54%
CISA KEVNot currently listed
Published2026-06-11
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Description
Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the _set_password parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable network can send a POST request to the settings endpoint during the first-run setup window to persist an arbitrary password hash, obtain a valid session cookie, and lock out the legitimate operator from their own instance.
Weakness classification
- disclosure@vulncheck.com: CWE-306