CVE-2026-54269 (GCVE-0-2026-54269)

Vulnerability from cvelistv5 – Published: 2026-06-22 16:23 – Updated: 2026-06-23 16:09
VLAI
Title
protobufjs: Schema-derived names can shadow runtime-significant properties
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 16:07 UTC
CWE
  • CWE-674 - Uncontrolled Recursion
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 8129 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
protobufjs protobuf.js Affected: < 7.6.3
Affected: >= 8.0.0, < 8.6.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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