High 8.1Published Oct 9, 2026

CVE-2026-107808Nginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)

Updated under an hour ago (Oct 27, 2026, 11:40 PM ET)

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It affects 0xJacky nginx-ui and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.41%, higher than 34% of scored CVEs.

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Every CVE for 0xJacky nginx-ui

Exploited in the last 30 days

Nginx UI is a web user interface for the Nginx web server. From 2.0.0 until 2.5.0, POST /api/login checks EnabledOTP but does not require a WebAuthn assertion when EnabledPasskey is true and no TOTP secret is configured. A passkey-only account is therefore issued a session after password verification, despite Enabled2FA reporting that the account has a second factor. An attacker who obtains the password can take over the account and reach administrative functionality without the registered passkey. This issue is fixed in version 2.5.0.

CVSS: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-287, CWE-305, CWE-308
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.41% (percentile 34)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

0xJacky nginx-ui 0xjacky:nginx_ui (from the name)	from 2.0.0, < 2.5.0	CNA record
nginxui nginx_ui nginxui:nginx_ui	from 2.0.0 before 2.5.0	NVD

References

References

https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-45gv-9wjv-xh7p	x-refsource-confirm, exploit, vendor-advisory, mitigation
https://github.com/0xJacky/nginx-ui/commit/95cd21b70814e5d9a48a359aa238aeea1ac97429	x-refsource-misc, patch
https://github.com/0xJacky/nginx-ui/releases/tag/v2.5.0	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.