CVE-2026-34417
Received Received - Intake
BaseFortify

Publication date: 2026-06-09

Last updated on: 2026-06-09

Assigner: VulnCheck

Description
OSCAL-GUI contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in a victim's browser by injecting malicious content through the project request parameter in oscal-forms.php. The parameter value is URL-decoded and assigned to the project_id variable without sanitization in oscal-functions.php, and when the supplied project ID is not found, the unsanitized value is concatenated into an error message via the Messages() function and reflected into the HTML response body without encoding.
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Meta Information
Published
2026-06-09
Last Modified
2026-06-09
Generated
2026-06-10
AI Q&A
2026-06-10
EPSS Evaluated
N/A
NVD
CVE-2026-34417
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue in OSCAL-GUI. It allows unauthenticated attackers to inject and execute arbitrary JavaScript code in a victim's browser. The attack works by sending malicious content through the project request parameter in the oscal-forms.php file. The parameter value is URL-decoded and assigned to a variable without proper sanitization. If the project ID is not found, the unsanitized value is included in an error message and reflected back into the HTML response without encoding, enabling the execution of the injected script.

Impact Analysis

This vulnerability can impact users by allowing attackers to execute arbitrary JavaScript in their browsers. This can lead to theft of sensitive information such as cookies or session tokens, unauthorized actions performed on behalf of the user, or redirection to malicious sites. Since the vulnerability is exploitable without authentication, it poses a risk to any user accessing the affected application.

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