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VulnerabilityPublished

CVE-2026-33027: 0xJacky nginx-ui · Path Traversal

Affects 0xJacky nginx-uiSource CVE Database V5

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Not known to be exploited · CVSS 6.9 Medium : upgrade to 2.3.4 when convenient.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score
6.9Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2.3.4
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 30 Mar 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade nginx-ui and 0xjacky/nginx-ui to 2.3.4.

Affected software

ProductAffectedFixed in
0xJackynginx-uiAffected
  • <2.3.4
Fixed in
  • 2.3.4
GitHub0xjacky/nginx-uipkg:github/0xjacky/nginx-uiOther threatsAffected
  • <2.3.4
Fixed in
  • 2.3.4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Organizations should immediately upgrade nginx-ui to version 2.3.4 or later, where the vulnerability is patched. Until upgrading, restrict access to nginx-ui interfaces to trusted administrators only and enforce strong authentication controls to minimize the risk of credential compromise. Implement strict role-based access control (RBAC) to limit users' ability to perform destructive file system operations. Monitor nginx-ui logs for unusual file operation requests or suspicious path traversal attempts. Employ file system integrity monitoring on the /etc/nginx directory to detect unauthorized changes or deletions promptly. Regularly back up Nginx configuration files and automate recovery procedures to reduce downtime in case of successful exploitation. Additionally, consider network segmentation to isolate management interfaces from general user networks and apply web application firewalls (WAFs) that can detect and block path traversal payloads targeting nginx-ui.

Description

Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, the nginx-ui configuration improperly handles URL-encoded traversal sequences. When specially crafted paths are supplied, the backend resolves them to the base Nginx configuration directory and executes the operation on the base directory (/etc/nginx). In particular, this allows an authenticated user to remove the entire /etc/nginx directory, resulting in a partial Denial of Service. This issue has been patched in version 2.3.4.

References

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