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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Fixes

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Workaround

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History

Wed, 10 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 10 Jun 2026 11:30:00 +0000

Type Values Removed Values Added
First Time appeared Brian-ruf
Brian-ruf oscal-gui
Vendors & Products Brian-ruf
Brian-ruf oscal-gui

Tue, 09 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title OSCAL-GUI Reflected XSS via project parameter in oscal-forms.php
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-06-10T14:24:03.277Z

Reserved: 2026-03-27T15:24:06.752Z

Link: CVE-2026-34417

cve-icon Vulnrichment

Updated: 2026-06-10T14:23:58.292Z

cve-icon NVD

Status : Received

Published: 2026-06-09T22:16:22.620

Modified: 2026-06-09T22:16:22.620

Link: CVE-2026-34417

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-10T11:22:00Z

Weaknesses