UBUNTU-CVE-2026-84890

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Source

https://ubuntu.com/security/CVE-2026-84890

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84890.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-84890

Upstream

CVE-2026-84890

Published

2026-09-04T18:18:00Z

Modified

2026-09-16T14:01:07Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

undici's decompress interceptor decompresses response bodies according to the untrusted Content-Encoding header. While the number of content-encoding layers is capped, the total decompressed output size is unbounded and there is no configuration option to limit it. A malicious or faulty upstream can therefore return a small compressed payload, a compression bomb, that expands to hundreds of megabytes or more in client memory, an asymmetric resource consumption that can exhaust memory and crash the process. This affects undici versions from 7.15.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

References

Affected packages

Ubuntu:24.04:LTS / node-undici

Package

Name: node-undici
Purl: pkg:deb/ubuntu/node-undici?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.22.1+dfsg1+~cs20.10.10.2-1ubuntu1

5.26.3+dfsg1+~cs23.10.12-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-llhttp",
            "binary_version": "9.1.3~5.26.3+dfsg1+~cs23.10.12-2"
        },
        {
            "binary_name": "node-undici",
            "binary_version": "5.26.3+dfsg1+~cs23.10.12-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84890.json"

Ubuntu:26.04:LTS / node-undici

Package

Name: node-undici
Purl: pkg:deb/ubuntu/node-undici?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.3.0+dfsg1+~cs24.12.11-2

7.16.0+dfsg+~cs3.2.0-2

7.18.2+dfsg+~cs3.2.0-1

7.18.2+dfsg+~cs3.2.0-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "node-undici",
            "binary_version": "7.18.2+dfsg+~cs3.2.0-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84890.json"