UBUNTU-CVE-2026-89425

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Source
https://ubuntu.com/security/CVE-2026-89425
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-89425
Upstream
Published
2026-09-23T03:17:00Z
Modified
2026-09-24T02:02:54Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

UTF8DataInputJsonParser._reportInvalidToken() in FasterXML jackson-core builds the offending-token text for its error message by appending Java identifier characters to a StringBuilder in a loop that has no upper bound. Unlike the three sibling parser implementations, including UTF8StreamJsonParser, it never consults ErrorReportConfiguration.getMaxErrorTokenLength() (default 256). A malformed token supplied to a parser created through JsonFactory.createParser(DataInput) is therefore accumulated in full. No StreamReadConstraints setting mitigates this: maxDocumentLength cannot be applied to DataInput sources at all, and maxStringLength does not cover this path because the accumulation bypasses ReadConstrainedTextBuffer. The reporter measured a 20,000,109-character exception message from a 20-million-character malformed token on the DataInput path, against 367 characters for identical input on the InputStream path. Scaling the payload drives the StringBuilder, which also incurs byte-to-char expansion and internal array doubling, to many times the raw payload size and can trigger OutOfMemoryError for the whole JVM. UTF8DataInputJsonParser was introduced in 2.8.0 together with createParser(DataInput); releases before 2.8.0 do not contain the affected class.

References

Affected packages

Ubuntu:16.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.4.2-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.4.2-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"
Ubuntu:18.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.8.6-1
2.9.1-1
2.9.4-1
2.9.8-3~18.04

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.9.8-3~18.04"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"
Ubuntu:20.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=focal

Affected ranges

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

Affected versions

2.*
2.9.8-3
2.10.0-1
2.10.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.10.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"
Ubuntu:22.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.12.1-1
2.13.0-1
2.13.0-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.13.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"
Ubuntu:24.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.14.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.14.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"
Ubuntu:26.04:LTS
jackson-core

Package

Name
jackson-core
Purl
pkg:deb/ubuntu/jackson-core?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.14.1-1
2.14.1-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libjackson2-core-java",
            "binary_version":  "2.14.1-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-89425.json"