CVE-2026-33331
oRPC: Stored XSS in OpenAPI Reference Plugin via unescaped JSON.stringify
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
1th
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.
| CWE | CWE-79 |
| Vendor | middleapi |
| Product | orpc |
| Published | Mar 24, 2026 |
| Last Updated | Mar 25, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
Low
Availability
None
Affected Versions
middleapi / orpc
< 1.13.9