No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
Moleculer is a progressive microservices framework for Node.js. Prior to 0.14.36 and 0.15.2, Parser._write in src/transporters/tcp/parser.js used Buffer.prototype.readInt32BE to read a signed packet length, so a remote unauthenticated peer could supply a negative value that caused packet.slice(length) to return the unchanged buffer while the while (packet.length > 0) loop continued indefinitely. The synchronous loop blocked the Node.js event loop and made every service in the process unresponsive until restart. The TCP transporter must be enabled and reachable, and neither CRC validation nor maxPacketSize prevents the malformed length value. This issue is fixed in versions 0.14.36 and 0.15.2.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 04 Nov 2026
- Last modified upstream: 04 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/moleculerjs/moleculer/commit/168ecbdc245c9a9d1dc4ef9b8a81dbae38ee3063
- https://github.com/moleculerjs/moleculer/commit/914074e502ae403a0338ad168b45b16d6bcc3e44
- https://github.com/moleculerjs/moleculer/releases/tag/v0.14.36
- https://github.com/moleculerjs/moleculer/releases/tag/v0.15.2
- https://github.com/moleculerjs/moleculer/security/advisories/GHSA-h89v-g948-47vp
- Analysis, summary and remediation
- © VulnCrest