CVE-2026-28274
Stored XSS in Initiative Document Upload Allows Credential Theft
Publication date: 2026-02-26
Last updated on: 2026-02-27
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| morelitea | initiative | to 0.32.2 (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. |
| CWE-434 | The product allows the upload or transfer of dangerous file types that are automatically processed within its environment. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability affects the Initiative project management platform versions prior to 0.32.4. It is a Stored Cross-Site Scripting (XSS) issue in the document upload functionality. Users with upload permissions can upload malicious .html or .htm files that contain embedded JavaScript. Because these files are served under the application's origin without proper sandboxing, the malicious scripts execute in the context of the application.
This means that the attacker can run scripts that steal sensitive information such as authentication tokens and session cookies from users who access the malicious file.
How can this vulnerability impact me? :
The vulnerability can lead to the theft of sensitive data like authentication tokens and session cookies, which can allow attackers to impersonate users or gain unauthorized access to the application.
Since the malicious file is hosted under the application's domain, simply sharing the direct link to the uploaded file can trigger the execution of the malicious script, potentially affecting any user who accesses it.
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?
The immediate step to mitigate this vulnerability is to upgrade the Initiative application to version 0.32.4 or later, as this version fixes the Stored Cross-Site Scripting (XSS) issue in the document upload functionality.
Additionally, restrict upload permissions within the "Initiatives" section to trusted users only, and consider disabling the upload of `.html` or `.htm` files until the upgrade is applied.