CVE-2026-25148
Cross-Site Scripting in Qwik.js Server-Side Rendering
Publication date: 2026-02-03
Last updated on: 2026-02-10
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| qwik | qwik | to 1.19.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Cross-Site Scripting (XSS) issue in the Qwik JavaScript framework prior to version 1.19.0. It occurs in the server-side rendering process where virtual attribute serialization is handled. A remote attacker can exploit this flaw by injecting arbitrary web scripts into server-rendered pages through these virtual attributes. When a victim visits the affected page, the malicious script executes in their browser within the context of the vulnerable site.
How can this vulnerability impact me? :
Exploitation of this vulnerability allows an attacker to run arbitrary scripts in the browser of users visiting the affected site. This can lead to theft of sensitive information such as cookies or session tokens, unauthorized actions performed on behalf of the user, defacement of the website, or distribution of malware. Essentially, it compromises the security and trustworthiness of the web application and can negatively affect users' privacy and data security.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update Qwik.js to version 1.19.0 or later, where the Cross-Site Scripting issue has been patched.