CVE-2026-34416

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 v4.0

5.1 MEDIUMCVSS: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

CVSS v3.1

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

EPSS

0.20% chance of exploitation in the next 30 days, 10th percentile

Published

2026-06-09

Updated

2026-07-14

Proof-of-concept exploits (1)

• https://gist.github.com/cyberinforepo/5a8d369a005826b6b42bfeed9607c2dd

References

• CVE Record
• NVD entry

Related

• CVE-2026-34415
• CVE-2026-34417
• CVE-2026-34414
• CVE-2026-34429
• CVE-2026-34413
• CVE-2026-34444