CVE-2026-34416
MEDIUM EPSS 9.8%
Published Jun 9, 20262w ago · Modified Jun 17, 20261w ago
5.1 CVSS 4.0
Published Jun 9, 2026 2w ago
Last Modified Jun 17, 2026 1w ago
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 input through the project request parameter. Attackers can craft a malicious URL containing unsanitized input that breaks out of the JavaScript string and HTML attribute context in the body onload event handler to execute arbitrary scripts when the link is visited by a victim.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X
Threat Intelligence
EPSS Exploit Probability
9.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-79 Cross-site Scripting Injection
References 2
- gist.github.com https://gist.github.com/cyberinforepo/5a8d369a005826b6b42bfeed9607c2dd
- vulncheck.com https://www.vulncheck.com/advisories/oscal-gui-reflected-xss-via-project-parameter-in-oscal-php
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.