CVE-2026-33026: CWE-312: Cleartext Storage of Sensitive Information in 0xJacky nginx-ui
CVE-2026-33026 is a critical vulnerability in the 0xJacky nginx-ui web user interface for the Nginx web server. Versions prior to 2.3.4 have a flaw in the backup restore mechanism that allows attackers to tamper with encrypted backup archives and inject malicious configuration during restoration. This issue involves cleartext storage of sensitive information and improper validation of backup archives. The vulnerability has been patched in version 2.3.4. The CVSS 4.0 score is 9.4, indicating a critical severity level.
AI Analysis
Technical Summary
CVE-2026-33026 affects the 0xJacky nginx-ui product versions before 2.3.4. The vulnerability arises from cleartext storage of sensitive information (CWE-312) and improper validation of backup archives (CWE-347, CWE-354) in the backup restore mechanism. This allows an attacker with high privileges to tamper with encrypted backup archives and inject malicious configuration during the restoration process. The vulnerability is addressed by an official patch in version 2.3.4.
Potential Impact
An attacker with high privileges can exploit this vulnerability to modify backup archives and inject malicious configuration into the nginx-ui during restoration. This could lead to unauthorized configuration changes and potential compromise of the web server environment. The cleartext storage of sensitive information increases the risk of information disclosure. The CVSS 4.0 score of 9.4 reflects a critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade the 0xJacky nginx-ui to version 2.3.4 or later, where this vulnerability has been officially patched. Applying this update will remediate the cleartext storage and backup validation issues. No additional mitigation is required if the patch is applied.
CVE-2026-33026: CWE-312: Cleartext Storage of Sensitive Information in 0xJacky nginx-ui
Description
CVE-2026-33026 is a critical vulnerability in the 0xJacky nginx-ui web user interface for the Nginx web server. Versions prior to 2.3.4 have a flaw in the backup restore mechanism that allows attackers to tamper with encrypted backup archives and inject malicious configuration during restoration. This issue involves cleartext storage of sensitive information and improper validation of backup archives. The vulnerability has been patched in version 2.3.4. The CVSS 4.0 score is 9.4, indicating a critical severity level.
CVSS v4.0
Score 9.4critical
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-33026 affects the 0xJacky nginx-ui product versions before 2.3.4. The vulnerability arises from cleartext storage of sensitive information (CWE-312) and improper validation of backup archives (CWE-347, CWE-354) in the backup restore mechanism. This allows an attacker with high privileges to tamper with encrypted backup archives and inject malicious configuration during the restoration process. The vulnerability is addressed by an official patch in version 2.3.4.
Potential Impact
An attacker with high privileges can exploit this vulnerability to modify backup archives and inject malicious configuration into the nginx-ui during restoration. This could lead to unauthorized configuration changes and potential compromise of the web server environment. The cleartext storage of sensitive information increases the risk of information disclosure. The CVSS 4.0 score of 9.4 reflects a critical impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade the 0xJacky nginx-ui to version 2.3.4 or later, where this vulnerability has been officially patched. Applying this update will remediate the cleartext storage and backup validation issues. No additional mitigation is required if the patch is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-17T17:22:14.668Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 69cad4ace6bfc5ba1d65117d
Added to database: 03/30/2026, 19:53:16 UTC
Last enriched: 07/06/2026, 23:20:01 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 176
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