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CVE-2026-107808: Nginx UI is a web user interface for the Nginx web server

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This week
HIGH 8.1REMOTEWATCHLISTUPGRADE

CVE-2026-107808 is a high-severity flaw (CVSS 8.1) affecting nginx ui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 adminis

Why this priority

  • High severity
  • Public exploit reference
  • Remotely exploitable, no login, no user action
  • On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score8.1 (High)
Attack vectorNetwork (remote)
Attack complexityHigh
Privileges neededNone
User interactionNone
EPSS exploit chance0.4% (top 65%)
CISA exploited listNo
WeaknessCWE-287, CWE-305, CWE-308
Published2026-10-09
Last modified2026-10-20
Publisher (CNA): GitHub, Inc. · Vendor: nginxui

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Last updated 2026-10-20 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

nginxui nginx ui UPGRADE
Affected: >= 2.0.0 and < 2.5.0
Fixed in: 2.5.0
Safe to downgrade to: a release before 2.0.0
1. Check installed version
apt-cache policy nginx-ui || rpm -q nginx-ui || nginx-ui --version
2. UPGRADE to 2.5.0 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade nginx-ui
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade nginx-ui
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
3. If no update is available yet, DOWNGRADE to a release before 2.0.0 (Debian / Ubuntu)
apt-cache madison nginx-ui sudo apt install nginx-ui=<VERSION_BEFORE_2.0.0> sudo apt-mark hold nginx-ui
3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)
dnf --showduplicates list nginx-ui sudo dnf downgrade nginx-ui-<VERSION_BEFORE_2.0.0> sudo dnf versionlock add nginx-ui
Downgrade risk
Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.
After downgrade
Restart the service, and keep the package held until a fixed release ships.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-107808?

nginx ui: upgrade to 2.5.0. Exact commands for each OS are on this page.

Is CVE-2026-107808 being exploited?

CVE-2026-107808 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-107808 affect?

CVE-2026-107808 affects nginx ui. Severity is high (CVSS 8.1). 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 acco

How urgent is CVE-2026-107808?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action; On your watchlist

Software pages

nginx vulnerabilities

Related CVEs

References

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