Redpanda Data Redpanda Connect up to 4.110 Management HTTP API missing authentication

Summaryinfo

A vulnerability categorized as critical has been discovered in Redpanda Data Redpanda Connect up to 4.110. This affects an unknown function of the component Management HTTP API. Executing a manipulation can lead to missing authentication. This vulnerability is registered as CVE-2026-123270. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability has been found in Redpanda Data Redpanda Connect up to 4.110 and classified as critical. This vulnerability affects an unknown functionality of the component Management HTTP API. The manipulation with an unknown input leads to a missing authentication vulnerability. The CWE definition for the vulnerability is CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Redpanda Connect versions 4.39 to 4.110 contain a missing authentication vulnerability that enables unauthenticated remote code execution (RCE). In streams mode, the management HTTP API is exposed on `0.0.0.0:4195`, but authentication is disabled by default and there is no authentication gate protecting the stream CRUD routes. An unauthenticated attacker with network access to TCP/4195 can `POST` a malicious pipeline definition to `/streams/{id}` that includes code-executing processors such as `command`, `subprocess`, `ffi`, or unsafe `sql_raw`, thereby achieving arbitrary RCE on the host with the permissions of the Redpanda Connect service account. Because pipelines can also return command output in-band via HTTP, this vulnerability enables full host compromise, credential theft, and data exfiltration with no user interaction or credentials required. Starting with v4.111, the API endpoint was reconfigured as opt-in, so this and later versions are no longer vulnerable by default. However, RCE remains achievable on v4.111 and later if the management API is manually enabled via the `--bind-http` flag.

The advisory is available at github.com. This vulnerability was named CVE-2026-123270 since 11/05/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 11/09/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Redpanda Data

Name

• Redpanda Connect

Version

• 4.110

CPE 2.3info

• 🔒

CPE 2.2info

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