CVE-2026-49973: nesquena hermes-webui

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

CVSS 9.2 CriticalCriticalEPSS 0.0054 · 45th percentile

Critical, because:

CVSS score 9.2: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 11 Jun 2026, 19:04 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
nesquena	hermes-webui pkg:github/nesquena/hermes-webui	affected before 0.51.358 semver Other versions: affected

Identifiers

CVE-2026-49973

CNA

VulnCheck

Weakness (CWE)

CWE-306

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
9.2	Critical	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	CNA (VulnCheck)Used for this record
9.4	Critical	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0054, the 45th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 11 Jun 2026. New records show when each source confirmed them.

Sources

References from the CNA

github.com/nesquena/hermes-webui/releases/tag/v0.51.358 release-notes
github.com/nesquena/hermes-webui/pull/3964 issue-tracking
github.com/nesquena/hermes-webui/pull/3973 issue-tracking
github.com/nesquena/hermes-webui/commit/1126e541325d401538f6a272a9c024c37d47ae08 patch
www.vulncheck.com/advisories/hermes-webui-unauthenticated-password-takeover-via-api-settings third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.