CVE-2026-33331
High
Description
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.9, a stored cross-site scripting (XSS) vulnerability exists in the OpenAPI documentation generation of orpc. If an attacker can control any field within the OpenAPI specification (such as info.description), they can break out of the JSON context and execute arbitrary JavaScript when a user views the generated API documentation. This issue has been patched in version 1.13.9.
SeverityHigh
CVSS8.2
Exploit probability—
ProductOrpc
PublishedMar 24, 2026
First seenMar 24, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- orpc orpc1.13.9 or later
- @orpc/openapi1.13.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| orpc orpc | v < 1.13.9 | 1.13.9 |
| @orpc/openapinpm | v < 1.13.9 | 1.13.9 |
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