High severity · published Oct 9, 2026
CVE-2026-107811
0xJacky/nginx-ui /api/nodes Leaks Cluster Node Tokens and Allows Cross-Node Impersonation as initUser
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, ordinary authenticated users can access /api/nodes and /api/nodes/:id, whose responses serialize the node token field. The same token is accepted as X-Node-Secret by AuthRequired and maps the request to initUser, allowing the user to impersonate a trusted node against a reachable cluster member. This cross-node authentication bypass can expose sensitive management operations, including configuration synchronization and service restart. This issue is fixed in version 2.5.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NG
nginx-ui · 0xJacky
>= 2.0.0, < 2.5.0 · source: vendor
NU
Nginx UI · Nginxui
2.0.0 before 2.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107811
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107811
x_refsource_CONFIRM
https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-32gc-wf3m-78w9
x_refsource_MISC
https://github.com/0xJacky/nginx-ui/commit/0ecbd106c37b5143be14880c9447a66135151512
x_refsource_MISC
https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0
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