CVE-2026-54451

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/elixir-protobuf/protobuf/commit/352d1769a0ef575a8d18c3f9620609efdb73e2bc
https://github.com/elixir-protobuf/protobuf/commit/b8efa97790eece3d2d0e8e7c31a45ed409fe5338
https://github.com/elixir-protobuf/protobuf/releases/tag/v0.16.1
https://github.com/elixir-protobuf/protobuf/security/advisories/GHSA-rv48-qqj5-crxg
https://github.com/elixir-protobuf/protobuf/security/advisories/GHSA-rv48-qqj5-crxg

Configurations

No configuration.

History

21 Sep 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://github.com/elixir-protobuf/protobuf/security/advisories/GHSA-rv48-qqj5-crxg -~~	() https://github.com/elixir-protobuf/protobuf/security/advisories/GHSA-rv48-qqj5-crxg -

17 Sep 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 19:16

Updated : 2026-09-24 21:16

NVD link : CVE-2026-54451

Mitre link : CVE-2026-54451

CVE.ORG link : CVE-2026-54451

JSON object : View

Products Affected

No product.

CWE

CWE-674

Uncontrolled Recursion

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