CVE-2026-87776

Name	CVE-2026-87776
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1147519

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-compression (PTS)	bookworm, trixie	1.7.4-3	vulnerable
	forky, sid	1.8.2+~1.8.1-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-compression	source	(unstable)	1.8.2+~1.8.1-1			1147519

Notes

[trixie] - node-compression <no-dsa> (Minor issue)
[bookworm] - node-compression <postponed> (Minor issue)
https://github.com/expressjs/compression/security/advisories/GHSA-vc2v-76pw-4v95
Fixed by: https://github.com/expressjs/compression/commit/151f63e91e1b64f8fb0b064e19321a4f28db6bff (v1.8.2)