CVE-2026-54451

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Source
https://cve.org/CVERecord?id=CVE-2026-54451
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54451.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54451
Aliases
Downstream
Published
2026-09-17T18:19:25Z
Modified
2026-09-18T03:47:25Z
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
Summary
Elixir protobuf: Unbounded recursion depth in embedded-message decoding
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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-674"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54451.json"
}
References

Affected packages

Git / github.com/elixir-protobuf/protobuf

Affected ranges

Type
GIT
Repo
https://github.com/elixir-protobuf/protobuf
Events
Introduced
3b251d286dc94745fc6a92fcbf9be03f44bb9b46
Fixed
786ba702dab5d7263691db57a972b0bb7330606e
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0.8.0"
        },
        {
            "fixed": "0.16.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v0.*
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.14.1
v0.15.0
v0.16.0
v0.8.0
v0.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54451.json"