GHSA-7f6v-3gx7-27q8

Source

https://github.com/advisories/GHSA-7f6v-3gx7-27q8

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-7f6v-3gx7-27q8/GHSA-7f6v-3gx7-27q8.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-7f6v-3gx7-27q8

Aliases

CVE-2026-33331

Published

2026-03-20T17:25:56Z

Modified

2026-03-27T22:16:26Z

Severity

8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N CVSS Calculator

Summary

oRPC has Stored XSS in OpenAPI Reference Plugin via unescaped JSON.stringify

Details

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. In the packages/openapi/src/plugins/openapi-reference.ts file, the renderDocsHtml() function takes an OpenAPI spec object and embeds it directly into the HTML response using a template literal:

<script id="spec" type="application/json">${JSON.stringify(spec)}</script>

The JSON.stringify() function does not escape HTML characters like < or >. Therefore, if an attacker provides a string containing

Database specific

{
    "cwe_ids":  [
        "CWE-79"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-20T17:25:56Z",
    "nvd_published_at":  "2026-03-24T20:16:28Z",
    "severity":  "HIGH"
}

References

Affected packages

npm / @orpc/openapi

Package

Name: @orpc/openapi; View open source insights on deps.dev
Purl: pkg:npm/%40orpc/openapi

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.13.9

Database specific

last_known_affected_version_range

"<= 1.13.8"

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-7f6v-3gx7-27q8/GHSA-7f6v-3gx7-27q8.json"