CVE-2026-33029: nginx-ui Vulnerable to DoS via Negative Integer Input in Logrotate Interval

March 30, 2026

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.

References

github.com/0xJacky/nginx-ui
github.com/0xJacky/nginx-ui/releases/tag/v2.3.4
github.com/0xJacky/nginx-ui/security/advisories/GHSA-cp8r-8jvw-v3qg
github.com/advisories/GHSA-cp8r-8jvw-v3qg
nvd.nist.gov/vuln/detail/CVE-2026-33029

Code Behaviors & Features

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