CVE-2026-25141CWE-94

Orval has a code injection via unsanitized x-enum-descriptions uing JS comments

Critical · published January 30, 2026

CVSS v4.0
9.3
EPSS
1%
Percentile
52.4
In the wild
Unconfirmed
What it is

Orval generates type-safe JS clients (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification. Versions starting with 7.19.0 and prior to 7.21.0 and 8.2.0 have an incomplete fix for CVE-2026-23947. While the jsStringEscape function properly handles single quotes ('), double quotes (") and so on, it is still possible to achieve code injection using only a limited set of characters that are currently not escaped. The vulnerability lies in the fact that the application can be forced to execute arbitrary JavaScript using characters such as []()!+. By using a technique known as JSFuck, an attacker can bypass the current sanitization logic and run arbitrary code without needing any alphanumeric characters or quotes. Version 7.21.0 and 8.2.0 contain an updated fix.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00695 · 52.4th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-01-30T20:19Z
EPSS history
Timeline
  • 30 JAN 20:19Z
    Orval has a code injection via unsanitized x-enum-descriptions uing JS comments
    cvelistv5