CVE-2026-33331 | THREATINT

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.

PUBLISHED Reserved 2026-03-18 | Published 2026-03-24 | Updated 2026-03-25 | Assigner GitHub_M

HIGH: 8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

< 1.13.9

affected

References

github.com/...i/orpc/security/advisories/GHSA-7f6v-3gx7-27q8 exploit

github.com/...i/orpc/security/advisories/GHSA-7f6v-3gx7-27q8

github.com/...ommit/4f0efa8a1d3fa8e8317a4b03cc3945a5dfd68add

github.com/middleapi/orpc/releases/tag/v1.13.9

cve.org (CVE-2026-33331)

nvd.nist.gov (CVE-2026-33331)

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