CVE-2026-54269
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk15th percentile — higher than 15% of all known CVEs
Summary
In versions prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. This could lead to deterministic exceptions or recursive calls in various operations related to decoding and serialization.
Risk Assessment
Organizations may be exposed to errors in data processing and unpredictable application behavior, potentially leading to serious data integrity issues.
Recommendation
It is recommended to update protobufjs to version 8.6.0 or 7.6.3 to eliminate this vulnerability and minimize the risk associated with application errors.
Original NVD description (English source)
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. The known affected names are fields named hasOwnProperty, field or oneof names such as $type when loaded through protobufjs JSON/reflection descriptors, and service methods whose generated helper name is rpcCall. When affected message or service types were used, protobufjs could read schema-controlled data where it expected an own-property helper, reflected type metadata, or the base RPC helper. This could cause deterministic exceptions or recursive calls in affected decode post-checks, verification, object conversion, reflected JSON serialization, or protobufjs RPC helper invocation. This vulnerability is fixed in 8.6.0 and 7.6.3.