CVE-2026-61630

Publication date 21 September 2026

Last updated 23 September 2026

Ubuntu priority

Cvss 3 Severity Score

Description

nginx ignition is a user interface for the nginx web server. In versions 2.33.0 through 2.35.0, any user that has enabled the OTP 2FA can have their TOTP reused during the standard 30 second validity window. Version 2.35.1 patches the issue.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
nginx	26.04 LTS resolute	Not affected
	24.04 LTS noble	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Not affected
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

This is an issue in nginx ignition, not the nginx package

Severity score breakdown

CVSS version: CVSS v3.0

Base score 4.2 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	High
User interaction	Required
Scope	Unchanged
Confidentiality impact	High
Integrity impact	None
Availability impact	None

Scores

Parameter	Value
Base score	4.2 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N