CVE-2025-27789: Inefficient RexExp complexity in generated code with .replace when transpiling named capturing groups

Overview

Severity

Medium (CVSS 6.2)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Status

Not Exploited

Patch Tuesday

2025-Mar

Released

2026-08-07

EPSS Score

0.55% (percentile: 44.8%)

Affected Products (1)

Other

• 21466-17084

Revision History

• 2026-08-07: Information published.