CVE-2026-87776 - High Severity Vulnerability
Vulnerable Library - compression-1.7.4.tgz
Node.js compression middleware
Library home page: https://registry.npmjs.org/compression/-/compression-1.7.4.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/compression/package.json
Dependency Hierarchy:
- build-angular-13.0.3.tgz (Root Library)
- webpack-dev-server-4.4.0.tgz
- ❌ compression-1.7.4.tgz (Vulnerable Library)
Found in HEAD commit: 977ea6ccaaf2045985ee40cacd5f6d676fa1a047
Found in base branch: master
Vulnerability Details
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.
Publish Date: 2026-09-11
URL: CVE-2026-87776
CVSS 3 Score Details (7.5)
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.
Suggested Fix
Type: Upgrade version
Release Date: 2026-09-11
Fix Resolution: compression - 1.8.2,https://github.com/expressjs/compression.git - v1.8.2
Step up your Open Source Security Game with Mend here
CVE-2026-87776 - High Severity Vulnerability
Node.js compression middleware
Library home page: https://registry.npmjs.org/compression/-/compression-1.7.4.tgz
Sample Path to Dependency File: /package.json
Path to vulnerable library: /node_modules/compression/package.json
Dependency Hierarchy:
Found in HEAD commit: 977ea6ccaaf2045985ee40cacd5f6d676fa1a047
Found in base branch: master
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.
Publish Date: 2026-09-11
URL: CVE-2026-87776
Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Release Date: 2026-09-11
Fix Resolution: compression - 1.8.2,https://github.com/expressjs/compression.git - v1.8.2
Step up your Open Source Security Game with Mend here