CVE-2026-54270 protobufjs: Memory amplification from preserved unknown fields in binary decode

protobufjs compiles protobuf definitions into JavaScript JS functions. From 8.2.0 to 8.4.2, protobufjs preserved unknown wire elements in message.$unknowns and did not provide a decode-time option to discard unknown fields before retaining them. A crafted protobuf payload containing many unknown...

@agentbadge/mcp (>=0.1.9, <=0.2.0), @agentbadge/passport (>=0.1.8, <=0.2.0) +84 more potentially affected by CVE-2026-54270 via protobufjs (>=8.2.0, <=8.4.2)

protobufjs NPM version =8.2.0, =0.1.9, =0.1.8, =0.1.1, =0.1.1, =1.16.0, =1.0.5, =0.0.4, =0.0.4, =0.0.4, =0.0.4, =0.1.37, =0.1.29, =0.1.35 and more Source cves: CVE-2026-54270 Source advisory: OSV:GHSA-94RC-8X27-4472...

@agentbadge/mcp (>=0.1.9, <=0.2.0), @agentbadge/passport (>=0.1.8, <=0.2.0) +84 more potentially affected by CVE-2026-54270 via protobufjs (>=8.2.0, <=8.4.2)

protobufjs NPM version =8.2.0, =0.1.9, =0.1.8, =0.1.1, =0.1.1, =1.16.0, =1.0.5, =0.0.4, =0.0.4, =0.0.4, =0.0.4, =0.1.37, =0.1.29, =0.1.35 and more Source cves: CVE-2026-54270 Source advisory: SNYK:JS-PROTOBUFJS-17353318...