---
title: "CVE-2026-87776\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-87776?format=md
keywords: index, follow
---

# CVE-2026-87776

Publication date 14 September 2026

Last updated 14 September 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-87776?format=md#impact-score)

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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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| node-compression | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |
| 18.04 LTS bionic | Needs evaluation |
| 16.04 LTS xenial | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-87776)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-87776)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-87776)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-87776)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-87776>
* <https://github.com/expressjs/compression/security/advisories/GHSA-vc2v-76pw-4v95>
* <https://cna.openjsf.org/security-advisories.html>