CVE-2026-23638 Kiteworks Secure Data Forms is vulnerable to Authorization Bypass Through User-Controlled Key
An authenticated attacker can tamper with other users' form approval configurations due to insufficient authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23638?
CVE-2026-23638 is a medium-severity missing authorization vulnerability in Accellion Kiteworks, published on 1 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Kiteworks is a private data network (PDN). Prior to version 9.3.0, an Insecure Direct Object Reference (IDOR) vulnerability in Kiteworks Secure Data Forms allows an authenticated attacker to tamper with the internal approval flow configurations of forms belonging to other users due to insufficient authorization checks on resource ownership. Upgrade Kiteworks to version 9.3.0 or later to receive a patch.
Weakness: CWE-639
Which versions are affected by CVE-2026-23638?
It affects 1 product.
Products include Accellion Kiteworks.
How do I fix CVE-2026-23638?
No fix has been published for CVE-2026-23638 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-23638 being exploited?
There is no known exploitation of CVE-2026-23638 in the wild and no public exploit code.
Other vulnerabilities in Accellion Kiteworks
- CVE-2026-102115 Kiteworks Core Authentication Bypass in the Password Reset Workflow
- CVE-2026-102149 Kiteworks Email Protection Gateway Improper Access Control
- CVE-2026-102147 Kiteworks Core Administrative Account Takeover through Stored Cross-site Scripting (XSS)
- CVE-2026-102095 Kiteworks Email Protection Gateway server-side request forgery
- CVE-2026-102102 Kiteworks Email Protection Gateway server-side request forgery