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CVE-2026-59877

7.5 high SSVC exploitation: none Analyzed

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.

Fix

Patch, vendor advisory and mitigation references on NVD 4

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · protobufjs_projectNVD modified 2026-10-25 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*

References 6