UBUNTU-CVE-2026-54451

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Source
https://ubuntu.com/security/CVE-2026-54451
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54451.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54451
Upstream
Published
2026-09-17T19:16:00Z
Modified
2026-09-24T02:00:28Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Elixir protobuf is a pure Elixir implementation of Google Protobuf. From 0.8.0 until 0.16.1, services that decode attacker-controlled protobuf bytes with Protobuf.Decoder can be taken offline when the schema contains a self-referential or cyclic message type. In lib/protobuf/decoder.ex, Protobuf.Decoder.value_for_field/3 handles an embedded?: true field by recursively entering the decode / build_message / handle_value / value_for_field call chain without enforcing a nesting-depth limit. Deeply nested embedded fields retain non-tail recursive frames, allowing a comparatively small request to consume substantial CPU and memory, pin a BEAM scheduler, and exhaust the node. This issue is fixed in version 0.16.1.

References

Affected packages

Ubuntu:14.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=trusty

Affected ranges

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

Affected versions

0.*
0.7.1-1
0.7.1-2
0.7.1-4build0.14.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build0.14.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54451.json"

Ubuntu:16.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.7.1-3
0.7.1-4build0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build0.16.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54451.json"

Ubuntu:18.04:LTS / elixir

Package

Name
elixir
Purl
pkg:deb/ubuntu/elixir?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.7.1-4build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-elixir",
            "binary_version": "0.7.1-4build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54451.json"