CVE-2026-40879
High · 7.5CVSS
7.5
EPSS
0.5%
Published
Apr 21, 2026
CISA due date
—
The record
Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @nestjs/microservices | 0 | 11.1.19 |
Related vulnerabilities
- GHSA-hpwf-8g29-85qm Nest Affected by DoS via Recursive handleData in JsonSocket (TCP Transport) Same vulnerability
- CVE-2026-92822 A flaw was found in libmodulemd. CWE-674
- CVE-2026-112895 Pillow is a Python imaging library. CWE-674
- CVE-2026-100354 kin-openapi is a Go project for handling OpenAPI files. CWE-674
- CVE-2026-109267 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains a stack overflow in the MSL… CWE-674
- CVE-2026-109264 ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 contains uncontrolled recursion in… CWE-674
- CVE-2026-107678 FFmpeg through 9.0.2 contains a stack exhaustion vulnerability in… CWE-674
- CVE-2026-107208 ImageMagick is free and open-source software used for editing and manipulating digital… CWE-674