Answer in brief
CVE-2026-77360 records a Medium severity (CVSS 0.0) vulnerability in oRPC: Vary Header Injection in CORS Plugin leading to potential Cache/CORS Bypass. The current sources do not mark it as known exploited. The current feed maps middleapi/orpc (generic), @orpc/server (npm), @orpc/server (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 0.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps middleapi/orpc (generic), @orpc/server (npm), @orpc/server (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| middleapi/orpcgeneric | <1.14.8 | 1.14.8 |
| @orpc/servernpm | <=1.14.7 | 1.14.8 |
| @orpc/servernpm | >=0 <1.14.8 | 1.14.8 |
Published upstream
Sep 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 30, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 16, 2026
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.
Quoted source text, attributed separately from HOL analysis.