Cloudanix VulnDB

CVE-2026-87776

High · 7.5

CVSS

7.5

EPSS

0.5%

Published

Sep 11, 2026

CISA due date

—

The record

compression is a Node.js and Express compression middleware. In versions before 1.8.2, when a client aborts the connection while a compressed response is still being sent, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. A remote unauthenticated attacker can repeatedly open requests and disconnect early, exhausting the available memory and crashing the server. All applications using compression are affected. The issue is fixed in compression 1.8.2, and users should upgrade to 1.8.2 or later.

Affected packages

Ecosystem Package Introduced Fixed

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