CVE-2026-33029

Nginx UI: DoS via Negative Integer Input in Logrotate Interval

Description

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, an input validation vulnerability in the logrotate configuration allows an authenticated user to cause a complete Denial of Service (DoS). By submitting a negative integer for the rotation interval, the backend enters an infinite loop or an invalid state, rendering the web interface unresponsive. This issue has been patched in version 2.3.4.

Scores

Weaknesses (CWE)

• CWE-20

Advisories

• GHSA-cp8r-8jvw-v3qg — nginx-ui Vulnerable to DoS via Negative Integer Input in Logrotate Interval
• GO-2026-4902 — nginx-ui Vulnerable to DoS via Negative Integer Input in Logrotate Interval in github.com/0xJacky/Nginx-UI

European references

• ENISA EUVD · EUVD-2026-17154
• GCVE · GCVE-0-2026-33029

Affected configurations (NVD CPE)

• cpe:2.3:a:nginxui:nginx_ui:*:*:*:*:*:*:*:* < 2.3.4

Affected products

References

• https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-cp8r-8jvw-v3qg
• https://github.com/0xJacky/nginx-ui/releases/tag/v2.3.4

Sources