CVE-2026-39629
Cross-Site Scripting in Uminex ≤ 1.0.9 Enables Code Injection
Publication date: 2026-04-08
Last updated on: 2026-04-09
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| kutethemes | uminex | to 1.0.9 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-80 | The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-39629 is a vulnerability in the WordPress Uminex Theme versions up to and including 1.0.9 that allows unauthenticated attackers to inject arbitrary content into website pages and posts.
This vulnerability is a type of improper neutralization of script-related HTML tags, also known as a basic Cross-Site Scripting (XSS) or content injection vulnerability.
Attackers can exploit this flaw to insert malicious content such as phishing pages into affected websites.
How can this vulnerability impact me? :
The vulnerability allows attackers to inject arbitrary content into your website without needing to authenticate.
This can lead to the insertion of malicious content like phishing pages, which can deceive your users and compromise their security.
Although the severity is rated as low (CVSS score 5.3), it could be used in mass-exploit campaigns targeting many websites indiscriminately.
Immediate mitigation involves updating the affected theme if possible or seeking help from hosting providers or web developers.
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation involves updating the affected Uminex theme if possible.
If updating is not possible, seek assistance from hosting providers or web developers.
Patchstack offers rapid vulnerability mitigation services to protect affected sites.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability allows unauthenticated attackers to inject arbitrary content into website pages and posts, potentially enabling malicious content such as phishing pages. This could lead to unauthorized data exposure or manipulation, which may impact compliance with standards like GDPR or HIPAA that require protection of personal and sensitive data.
However, the vulnerability is classified as low severity with limited impact and is considered unlikely to be exploited. There is no direct mention of compliance impact in the provided resources.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability affects the WordPress Uminex Theme versions up to and including 1.0.9 and allows unauthenticated attackers to inject arbitrary content into website pages and posts.
To detect this vulnerability on your system, you should first verify if the Uminex theme version installed is 1.0.9 or earlier.
You can check the theme version by accessing your WordPress installation files or using WP-CLI commands.
- Using WP-CLI, run: wp theme list --status=active
- Check the version of the Uminex theme in the output; if it is 1.0.9 or below, the site is vulnerable.
To detect possible exploitation attempts, monitor HTTP requests for unusual or suspicious content injection attempts, such as unexpected shortcode or script tags in page or post content.
You can use web server logs or intrusion detection systems to look for suspicious POST or GET requests targeting pages that accept content input.
No specific detection commands are provided in the available resources.