EUVD-2026-76072Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Network-accessible middleware requiring no auth or user interaction; impact is availability-only (memory exhaustion), with no confidentiality or integrity effect.
Primary rating from Vendor (openjs).
CVSS VectorVendor: openjs
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Memory exhaustion DoS in the expressjs/compression Node.js middleware (versions before 1.8.2) allows remote unauthenticated attackers to crash any Express server using the package. When a client aborts an HTTP connection while a compressed response is in flight, the zlib transform stream allocated for that response is never destroyed, permanently leaking its native heap memory. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Any Express.js application that has mounted the compression middleware (via app.use(compression()) or equivalent route-level usage) and is reachable over a network is vulnerable. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 7.5 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) accurately reflects the realistic threat profile: no authentication, no complexity, entirely network-accessible, and trivially automatable. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade to compression version 1.8.2 or later, which is the vendor-confirmed fix per the OpenJS Foundation advisory (GHSA-vc2v-76pw-4v95). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify and inventory all production and development systems running expressjs/compression versions prior to 1.8.2, prioritized by public-facing exposure and criticality. …
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External POC / Exploit Code
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