Detections
Analytics
CVE-2026-59877
medium
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs parsed option names by advancing through schema tokens until reaching an = token without checking for end of input, so a crafted .proto schema that opens an option declaration and ends prematurely can cause parse, Root.load, or Root.loadSync to loop indefinitely. This issue is fixed in versions 7.6.5 and 8.6.6.
References
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-j3f2-48v5-ccww
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.6
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v7.6.5
https://github.com/protobufjs/protobuf.js/pull/2352
https://github.com/protobufjs/protobuf.js/commit/fa5c73add738ceb471e74da8cc2f3727c3d0a69f
https://github.com/protobufjs/protobuf.js/commit/10fba6d54815ceecca8a06b9a6db490c8f5d2217