- 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.
- Source
- disclosure@vulncheck.com
- NVD status
- Deferred
CVSS 4.0
- Type
- Secondary
- Base score
- 9.2
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- CRITICAL
CVSS 3.1
- Type
- Secondary
- Base score
- 9.4
- Impact score
- 5.5
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
- Severity
- CRITICAL
- disclosure@vulncheck.com
- CWE-306
- Hype score
- Not currently trending
CVE-2026-49973 - Critical improper access control in Hermes WebUI. Unauthenticated attackers can hijack initial setup, set arbitrary password, lock out operators. CVSS 9.4. No patch yet - isolate affected systems immediately. #CVE #infosec #cybersecurity #linux
@HugoValters
12 Jun 2026
49 Impressions
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🚨 CVE-2026-49973 — CVSS 9.4/10 █████████░ Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated... Severity: CRITICAL Patch now. #cybersecurity #CVE https://t.co/OFO8fF8uw2
@OrizonCyber
11 Jun 2026
129 Impressions
0 Retweets
1 Like
1 Bookmark
1 Reply
0 Quotes