Weaviate Verba up to 2.1.3 API Middleware /api/connect host/port server-side request forgery

Summaryinfo

A vulnerability labeled as critical has been found in Weaviate Verba up to 2.1.3. The affected element is an unknown function of the file /api/connect of the component API Middleware. Such manipulation of the argument host/port leads to server-side request forgery. This vulnerability is listed as CVE-2026-65317. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Weaviate Verba up to 2.1.3 and classified as critical. Affected by this issue is an unknown part of the file /api/connect of the component API Middleware. The manipulation of the argument host/port with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Verba RAG application version 2.1.3 contains a server-side request forgery vulnerability combined with a same-origin middleware bypass that allows unauthenticated remote attackers to make the server issue arbitrary HTTP requests by supplying a crafted Origin header and attacker-controlled host and port values. Attackers can bypass the localhost origin check in the API middleware by sending any Origin value prefixed with ' regardless of port, then submit arbitrary host and port parameters to the /api/connect endpoint to cause the server to issue outbound GET requests to attacker-controlled infrastructure.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-65317 since 07/21/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/22/2026).

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

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Productinfo

Vendor

• Weaviate

Name

• Verba

Version

• 2.1.0
• 2.1.1
• 2.1.2
• 2.1.3

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CPE 2.2info

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