CVE-2026-61630 PUBLISHED

nginx ignition has TOTP Reuse During Validity Window

Assigner: GitHub_M
Reserved: 10.07.2026 Published: 21.09.2026 Updated: 21.09.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N
CVSS Score: 4.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	None
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	lucasdillmann
Product	nginx-ignition
Versions	Version >= 2.33.0, < 2.35.1 is affected

References

https://github.com/lucasdillmann/nginx-ignition/security/advisories/GHSA-hf33-q6cf-c66f
https://github.com/lucasdillmann/nginx-ignition/commit/1cbfae0296f1b186158f5a294ec484060e00102e
https://github.com/lucasdillmann/nginx-ignition/commit/8d35e1eb5dd6a40fef94a45511fe08b0603af107

Problem Types

CWE-287: Improper Authentication CWE