CVE-2026-44292
CVE-2026-44292 · protobufjs: Prototype injection in generated message constructors
This page contains facts from public vulnerability sources. Check the original advisory before updating.
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated message constructors copied enumerable properties from a provided properties object without filtering the __proto__ key. If an application constructed a message from an attacker-controlled plain object, an own enumerable __proto__ property could alter the prototype of that individual message instance. This vulnerability is fixed in 7.5.6 and 8.0.2.
CVSS 5.3 · Medium · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
protobuf.js
- Versions
- < 7.5.6: Affected
- >= 8.0.0, < 8.0.2: Affected
No fix published
protobufjs npm
- Affected ranges
- SEMVER: < 7.5.6
Update to 7.5.6
protobufjs npm
- Affected ranges
- SEMVER: ≥ 8.0.0, < 8.0.2
Update to 8.0.2