CVE-2026-66723 Missing authentication requirement in Remote Instances proxy API in MWDB Core
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-66723?
CVE-2026-66723 is a high-severity vulnerability in CERT.PL MWDB Core, published on 29 Jul 2026.
Official description
MWDB Core versions >=2.2.0 and <2.19.0 contain a missing authorization vulnerability in the Remote Instances proxy API. The proxy API does not verify authentication for incoming requests, allowing an unauthenticated remote attacker to send arbitrary requests to a remote MWDB instance using the identity and permissions associated with the configured API key. This can result in unauthorized actions being performed on the remote instance as if executed by the user whose API key was used to set up the remote instance. The vulnerability is limited to deployments where Remote Instances have been configured.This issue has been fixed in version 2.19.0
Weakness: CWE-862
Which versions are affected by CVE-2026-66723?
How do I fix CVE-2026-66723?
No fix has been published for CVE-2026-66723 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-66723 being exploited?
There is no known exploitation of CVE-2026-66723 in the wild and no public exploit code.
Sources
Also known as GHSA-942c-r7qj-w895.