CVE-2026-33026 nginx-ui Backup Restore Allows Tampering with Encrypted Backups
Attackers can tamper with encrypted backups to inject malicious configurations during restoration in Nginx UI, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-33026?
CVE-2026-33026 is a critical vulnerability in 0xJacky nginx-ui, published on 30 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui backup restore mechanism allows attackers to tamper with encrypted backup archives and inject malicious configuration during restoration. This issue has been patched in version 2.3.4.
Which versions are affected by CVE-2026-33026?
3 open source packages ship an affected version, including github.com/0xJacky/Nginx-UI. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/0xJacky/Nginx-UI Go | All versions | None |
github.com/0xJacky/Nginx-UI Go | All versions | 1.9.10-0.20260315015203-f61bcec547c0 |
github.com/0xJacky/Nginx-UI Go | All versions | 1.9.10-0.20260315015203-f61bcec547c0 |
Products include Nginxui Nginx Ui.
How do I fix CVE-2026-33026?
Upgrade github.com/0xJacky/Nginx-UI to 1.9.10-0.20260315015203-f61bcec547c0 or later.
Is CVE-2026-33026 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33026 exists.
Other vulnerabilities in 0xJacky nginx-ui
- CVE-2026-33032 Nginx UI: Unauthenticated MCP Endpoint Allows Remote Nginx Takeover
- CVE-2026-27944 Nginx UI: Unauthenticated Backup Download with Encryption Key Disclosure
- CVE-2024-23827 Nginx-UI arbitrary file write through the Import Certificate feature
- CVE-2026-107806 Nginx UI: Authenticated Remote Code Execution via Backup Restore App Config Overwrite
- CVE-2026-42238 Unauthenticated Remote Code Execution via Backup Restore in nginx-ui
Sources
Also known as GHSA-fhh2-gg7w-gwpq, GO-2026-4903.