What is the CVSS score of EUVD-2026-33749?

EUVD-2026-33749 has a CVSS 3.1 base score of 8.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Kiteworks are affected by EUVD-2026-33749?

Kiteworks Secure Data Forms versions prior to 9.3.0 contain a reflected cross-site scripting vulnerability enabling attackers to execute arbitrary JavaScript in user browsers through socially…. A patch is available.

How to fix or mitigate EUVD-2026-33749?

Within 24 hours: Identify and inventory all Kiteworks deployments running versions prior to 9.3.0; disable or restrict access to Secure Data Forms for non-essential users. Within 7 days: Deploy Web Application Firewall rules to detect XSS patterns on Kiteworks endpoints; implement restrictive Content Security Policy headers on Kiteworks domain; audit access logs for suspicious form activity. Within 30 days: Apply Kiteworks patch to version 9.3.0 or later once released; conduct user awareness training on link validation; perform forensic review of Secure Data Forms access for indicators of exploitation.

Kiteworks EUVD-2026-33749

| CVE-2026-24751 HIGH

Cross-site Scripting (XSS) (CWE-79)

2026-06-01 GitHub_M

XSS Secure Data Forms

8.2

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.2 HIGH

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Patch available

Jun 01, 2026 - 22:02 EUVD

Analysis Generated

Jun 01, 2026 - 20:52 vuln.today

DescriptionGitHub Advisory

Kiteworks is a private data network (PDN). Prior to version 9.3.0, a reflected XSS vulnerability in Kiteworks Secure Data Forms could allow an external attacker to trick a user into executing arbitrary JavaScript code. Upgrade Kiteworks to version 9.3.0 or later to receive a patch.

AnalysisAI

Reflected cross-site scripting in Kiteworks Secure Data Forms prior to version 9.3.0 allows external attackers to execute arbitrary JavaScript in a victim's browser session by tricking them into clicking a crafted link. The flaw carries a CVSS 8.2 due to scope change (S:C) and high confidentiality impact, but exploitation requires user interaction. At time of analysis, no public exploit identified at time of analysis and the issue is not listed in CISA KEV.

Technical ContextAI

Kiteworks is a Private Data Network (PDN) platform used for governed file sharing, managed file transfer, and secure forms; the Secure Data Forms component (cpe:2.3:a:kiteworks:secure_data_forms) enables organizations to collect sensitive data via web forms. The vulnerability is CWE-79 (Improper Neutralization of Input During Web Page Generation), specifically a reflected XSS where attacker-controlled input echoed back in the form's response page is not properly encoded, permitting injection of script content into the DOM rendered for the victim.

RemediationAI

Vendor-released patch: Kiteworks 9.3.0 - upgrade all Kiteworks PDN instances to 9.3.0 or later as referenced in the GitHub Security Advisory GHSA-xp8m-wmmp-f947 (https://github.com/kiteworks/security-advisories/security/advisories/GHSA-xp8m-wmmp-f947). Until the upgrade is deployed, restrict access to the Secure Data Forms endpoint via network ACLs or WAF rules that filter common reflected XSS payloads (script tags, on-event handlers, javascript: URIs) in query parameters reaching the forms component, accepting that custom-encoded payloads may bypass signature-based WAFs. Educate form recipients to avoid clicking unsolicited Kiteworks form links from external senders and consider enabling a strict Content-Security-Policy header on the Kiteworks instance if supported by the deployment, noting that CSP changes can break legitimate embedded scripts and should be tested in a staging environment first.