CVE-2026-44291
8.1 · HIGHOverview
CVE-2026-44291 is a high-severity vulnerability affecting protobufjs_project protobufjs. It was published on May 13, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs used plain objects with inherited prototypes for internal type lookup tables used by generated encode and decode functions. If Object.prototype had already been polluted, those lookup tables could resolve attacker-controlled inherited properties as valid protobuf type information. This could cause attacker-controlled strings to be emitted into generated JavaScript code. This vulnerability is fixed in 7.5.6 and 8.0.2.
Remediation
Check the references section for vendor advisories and patches from protobufjs_project. Update protobufjs to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| protobufjs_project | protobufjs | >= 0, < 7.5.6 | Affected |
Frequently Asked Questions
What is CVE-2026-44291?
CVE-2026-44291 is a high-severity vulnerability affecting protobufjs_project protobufjs. It was published on May 13, 2026 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2026-44291?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-44291?
Check the references section for vendor advisories and patches from protobufjs_project. Update protobufjs to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-44291?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-44291 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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