middleapi orpc up to 1.14.7 CORS cors.ts cross-domain policy

Summaryinfo

A vulnerability has been found in middleapi orpc up to 1.14.7 and classified as problematic. This affects an unknown function of the file packages/server/src/plugins/cors.ts of the component CORS. The manipulation leads to cross-domain policy. This vulnerability is listed as CVE-2026-77360. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in middleapi orpc up to 1.14.7. This issue affects an unknown part of the file packages/server/src/plugins/cors.ts of the component CORS. The manipulation with an unknown input leads to a cross-domain policy vulnerability. Using CWE to declare the problem leads to CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. Impacted is confidentiality. The summary by CVE is:

oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to 1.14.8, the @orpc/server CORS plugin in packages/server/src/plugins/cors.ts copies a client's incoming Vary request header into the response instead of controlling Vary as a response-only header and using Origin for request-origin variation. In deployments behind a shared cache, CDN, or reverse proxy that keys responses using Vary, a client can inject arbitrary variation values, pollute cache keys, and cause inconsistent CORS enforcement for other clients. Default non-cached configurations have no established direct confidentiality, integrity, or availability impact. This issue is fixed in version 1.14.8.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-77360 since 08/20/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 1.14.8 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• middleapi

Name

• orpc

Version

• 1.14.0
• 1.14.1
• 1.14.2
• 1.14.3
• 1.14.4
• 1.14.5
• 1.14.6
• 1.14.7

Website

• Product: https://github.com/middleapi/orpc/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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