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CVE-2026-34416

MEDIUM Exploitation: PoC
6.1
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-34416
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-03-27 15:24 UTC
Published
2026-06-09 20:59 UTC
Last updated
2026-06-10 12:55 UTC
Primary CWE
CWE-79
Improper Neutralization of Input During Web Page Generation …
Vendor / Product
brian-ruf / OSCAL-GUI
Sources
cve.org  ·  NVD

Severity & Metrics

6.1 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
brian-ruf OSCAL-GUI — 0 ≤ c989c4bd5a68f2621a81654e9250246539a28d5a
Weakness (CWE)
CWESourceDescription
CWE-79 cna Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (2)
ScoreSeverityVersionSourceVector
6.1 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1 MEDIUM 4.0 cna 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
References (2)
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