CVE-2026-82266 Redpanda Admin API Unauthenticated Superuser Access via Default Configuration
Attackers can access the Redpanda Admin API without credentials due to insecure defaults, allowing them to modify cluster settings and disrupt operations.
- 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-2026-82266?
CVE-2026-82266 is a critical authentication bypass vulnerability in redpanda-data redpanda, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Redpanda through 26.2.2 binds the Admin API to 0.0.0.0:9644 with admin_api_require_auth defaulting to false, treating unauthenticated requests as superusers. Attackers can reach port 9644 without credentials to create and delete broker accounts, modify cluster configuration, and disrupt partition replication.
Weakness: CWE-306
Which versions are affected by CVE-2026-82266?
How do I fix CVE-2026-82266?
No fix has been published for CVE-2026-82266 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-82266 being exploited?
There is no known exploitation of CVE-2026-82266 in the wild and no public exploit code.
Sources
Also known as GHSA-qp5m-mrqw-6pxr.