CVE-2026-20223 Cisco Secure Workload Unauthorized API Access Vulnerability
Unauthenticated attackers can access internal REST APIs to read sensitive data and modify configurations with Site Admin privileges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20223?
CVE-2026-20223 is a critical missing authorization vulnerability in Cisco Secure Workload, published on 20 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role. This vulnerability is due to insufficient validation and authentication when accessing REST API endpoints. An attacker could exploit this vulnerability if they are able to send a crafted API request to an affected endpoint. A successful exploit could allow the attacker to read sensitive information and make configuration changes across tenant boundaries with the privileges of the Site Admin user.
Weakness: CWE-306
Which versions are affected by CVE-2026-20223?
It affects 1 product.
Products include Cisco Secure Workload.
How do I fix CVE-2026-20223?
No fix has been published for CVE-2026-20223 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-2026-20223 being exploited?
There is no known exploitation of CVE-2026-20223 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Cisco Secure Workload
Sources
Also known as GHSA-p3hw-qj46-c684.