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CVE PROGRAM SOURCE RECORD5.3 Medium

CVE-2026-45740

protobufjs: Denial of Service via unbounded recursive JSON descriptor expansion

Description

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace definitions could cause the JavaScript call stack to be exhausted during descriptor loading. This vulnerability is fixed in 7.5.8 and 8.2.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

protobufjs protobuf.js

  • < 7.5.8affected
  • >= 8.0.0, < 8.2.0affected

References