Description
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.
Published: 2026-09-11
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 11 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 11 Sep 2026 11:45:00 +0000

Type Values Removed Values Added
Description 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.
Title compression vulnerable to Denial of Service via memory leak on premature response close
Weaknesses CWE-401
CWE-459
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published:

Updated: 2026-09-11T13:36:30.531Z

Reserved: 2026-09-09T08:26:59.067Z

Link: CVE-2026-87776

cve-icon Vulnrichment

Updated: 2026-09-11T13:33:21.900Z

cve-icon NVD

Status : Received

Published: 2026-09-11T12:16:52.530

Modified: 2026-09-11T14:17:36.507

Link: CVE-2026-87776

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-11T14:00:08Z

Weaknesses
  • CWE-401

    Missing Release of Memory after Effective Lifetime

  • CWE-459

    Incomplete Cleanup