Disclosure summary
### Impact A vulnerability in compression `< 1.8.2` allows an attacker to trigger a Denial of Service (DoS) by disconnecting while a compressed response is being sent. When the client aborts the connection before the response finishes, the zlib stream created to compress that response is never destroyed, so each aborted compressed response leaks its native zlib memory. Repeated aborted requests can exhaust available memory. All applications using compression are affected. ### Patches Users should upgrade to `1.8.2`. ### Workarounds None.
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
GitHub Reviewed Security Advisories · GHSA-vc2v-76pw-4v95
Open original source · Updated Oct 05, 2026
compression vulnerable to Denial of Service via memory leak on premature response close
Source severity: HIGH / 0
| Ecosystem | Package | Affected range | First patched |
|---|---|---|---|
| npm | compression | < 1.8.2 | 1.8.2 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Reviewed advisory
PUBLISHED 2026-10-05T19:28:01-04:00
MODIFIED 2026-10-05T19:28:02-04:00
INGESTED 2026-10-06T11:45:33-04:00