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CVE

CVE-2026-49973

Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings
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CVE

CVE-2026-49973

Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings

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 setpassword 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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.2
-
4.0
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
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49973.json, https://github.com/nesquena/hermes-webui/releases/tag/v0.51.358, https://nvd.nist.gov/vuln/detail/CVE-2026-49973, https://www.vulncheck.com/advisories/hermes-webui-unauthenticated-password-takeover-via-api-settings, https://github.com/nesquena/hermes-webui/pull/3964, https://github.com/nesquena/hermes-webui/pull/3973, https://github.com/nesquena/hermes-webui/commit/1126e541325d401538f6a272a9c024c37d47ae08, https://github.com/nesquena/hermes-webui

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00543%
EPSS Percentile
0.43409%
Introduced Version
0
Fix Available
1126e541325d401538f6a272a9c024c37d47ae08

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