UBUNTU-CVE-2026-101025

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Source
https://ubuntu.com/security/CVE-2026-101025
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101025.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-101025
Upstream
  • CVE-2026-101025
Published
2026-10-15T00:00:00Z
Modified
2026-10-17T12:57:54Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Description NGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes. Impact This vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

References

Affected packages

Ubuntu:24.04:LTS / libnginx-mod-js

Package

Name
libnginx-mod-js
Purl
pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.7.12-2
0.8.2-1ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnginx-mod-http-js",
            "binary_version":  "0.8.2-1ubuntu1"
        },
        {
            "binary_name":  "libnginx-mod-stream-js",
            "binary_version":  "0.8.2-1ubuntu1"
        },
        {
            "binary_name":  "njs",
            "binary_version":  "0.8.2-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101025.json"

Ubuntu:26.10 / libnginx-mod-js

Package

Name
libnginx-mod-js
Purl
pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.4-1build2
0.9.9-2
1.*
1.0.0-1
1.0.0-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnginx-mod-http-js",
            "binary_version":  "1.0.0-3"
        },
        {
            "binary_name":  "libnginx-mod-stream-js",
            "binary_version":  "1.0.0-3"
        },
        {
            "binary_name":  "njs",
            "binary_version":  "1.0.0-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101025.json"

Ubuntu:Pro:26.04:LTS / libnginx-mod-js

Package

Name
libnginx-mod-js
Purl
pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.1-1ubuntu2
0.9.1-1ubuntu3
0.9.4-1~build1
0.9.4-1
0.9.4-1build1
0.9.4-1build2
0.9.4-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnginx-mod-http-js",
            "binary_version":  "0.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "libnginx-mod-stream-js",
            "binary_version":  "0.9.4-1ubuntu0.1~esm1"
        },
        {
            "binary_name":  "njs",
            "binary_version":  "0.9.4-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-101025.json"