High severity · published Sep 28, 2026
CVE-2026-102334
Nginx Proxy Manager through 2.16.0 Missing Brute-Force Protection
7.4
CVSS
0.5%
EPSS
No
On KEV
Description
Nginx Proxy Manager through 2.16.0 lacks rate-limiting on authentication endpoints, allowing unauthenticated attackers to make unlimited password guesses against any account. Attackers can brute-force login credentials via POST /api/tokens and subsequently guess TOTP codes via POST /api/tokens/2fa to gain full session access and administrative control.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NG
nginx-proxy-manager · NginxProxyManager
through 2.16.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-102334
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-102334
patch
https://github.com/NginxProxyManager/nginx-proxy-manager/pull/5908
technical-description
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/app.js#L15-L58
technical-description
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/token.js#L154-L182
technical-description
https://github.com/NginxProxyManager/nginx-proxy-manager/blob/v2.16.0/backend/internal/2fa.js#L196-L240
product
https://github.com/NginxProxyManager/nginx-proxy-manager
third-party-advisory
https://www.vulncheck.com/advisories/nginx-proxy-manager-through-2.16.0-missing-brute-force-protection
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