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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.

PUBLISHED Reserved 2026-03-27 | Published 2026-06-09 | Updated 2026-06-10 | Assigner VulnCheck




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

MEDIUM: 6.1CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
affected

Any version
affected

Credits

philopentest finder

VulnCheck finder

References

gist.github.com/...inforepo/5a8d369a005826b6b42bfeed9607c2dd technical-description exploit

www.vulncheck.com/...ia-project-parameter-in-oscal-forms-php third-party-advisory

cve.org (CVE-2026-34417)

nvd.nist.gov (CVE-2026-34417)

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