CVE-2026-28271 Kiteworks Core is vulnerable to Server-Side Request Forgery (SSRF)
Malicious administrators can bypass SSRF protections via DNS rebinding to access restricted internal services in Kiteworks Core.
- 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-2026-28271?
CVE-2026-28271 is a medium-severity server-side request forgery vulnerability in Accellion Kiteworks, published on 27 Feb 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 9.2.0, a vulnerability in Kiteworks configuration functionality allows bypassing of SSRF protections through DNS rebinding attacks. Malicious administrators could exploit this to access internal services that should be restricted. Version 9.2.0 contains a patch for the issue.
Which versions are affected by CVE-2026-28271?
It affects 1 product.
Products include Accellion Kiteworks.
How do I fix CVE-2026-28271?
No fix has been published for CVE-2026-28271 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-28271 being exploited?
There is no known exploitation of CVE-2026-28271 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