UBUNTU-CVE-2026-93753

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Source

https://ubuntu.com/security/CVE-2026-93753

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93753.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-93753

Upstream

CVE-2026-93753

Published

2026-09-21T00:00:00Z

Modified

2026-09-21T21:40:59Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

deepmerge through 4.3.1 contains a prototype poisoning vulnerability in the mergeObject() function that fails to properly validate keys being written to target objects. Attackers can supply malicious source objects in merge operations to inject attacker-controlled properties into the returned object's prototype, causing applications to inherit unintended values when accessing properties without own-property checks.

References

Affected packages

Ubuntu:22.04:LTS / node-deepmerge

Package

Name: node-deepmerge
Purl: pkg:deb/ubuntu/node-deepmerge?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.2.2-3

4.2.2+~1.1.1-1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "node-deepmerge",
            "binary_version":  "4.2.2+~1.1.1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93753.json"

Ubuntu:24.04:LTS / node-deepmerge

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.2.2+~1.1.1-3

4.3.1+~1.1.1-1build1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "node-deepmerge",
            "binary_version":  "4.3.1+~1.1.1-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93753.json"

Ubuntu:26.04:LTS / node-deepmerge

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

4.*

4.3.1+~1.1.1-1build1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "node-deepmerge",
            "binary_version":  "4.3.1+~1.1.1-1build1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-93753.json"