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.
Metrics
Affected Vendors & Products
References
History
Sun, 13 Sep 2026 20:30:00 +0000
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Expressjs
Expressjs compression |
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Expressjs
Expressjs compression |
Sat, 12 Sep 2026 00:15:00 +0000
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| Weaknesses | CWE-772 | |
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threat_severity
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threat_severity
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Fri, 11 Sep 2026 14:30:00 +0000
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ssvc
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Fri, 11 Sep 2026 11:45:00 +0000
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| 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 |
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cvssV3_1
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Status: PUBLISHED
Assigner: openjs
Published: 2026-09-11T11:24:55.150Z
Updated: 2026-09-11T13:36:30.531Z
Reserved: 2026-09-09T08:26:59.067Z
Link: CVE-2026-87776
Updated: 2026-09-11T13:33:21.900Z
Status : Awaiting Analysis
Published: 2026-09-11T12:16:52.530
Modified: 2026-09-16T19:40:00.317
Link: CVE-2026-87776