Arbitrary Code Injection Affecting protobufjs package, versions <7.5.6>=8.0.0-experimental <8.0.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published14 May 2026
- disclosed12 May 2026
- creditMichael Baraniak
Introduced: 12 May 2026
NewCVE-2026-44293 (opens in a new tab)How to fix?
Upgrade protobufjs to version 7.5.6, 8.0.2 or higher.
Overview
protobufjs is a protocol buffer for JavaScript (& TypeScript).
Affected versions of this package are vulnerable to Arbitrary Code Injection in the toObject function when handling a schema-controlled bytes field default value. An attacker can execute arbitrary JavaScript code by providing a crafted descriptor with a malicious default value for a bytes field, which is then used in the generated conversion function.