CVE-2026-44292
Last modified
CVE-2026-44292 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Protobufjs Project | Protobufjs | < 7.5.6 |
| Protobufjs Project | Protobufjs | >= 8.0.0, < 8.0.2 |
References
- https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-fx83-v9x8-x52wMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-44292?
How severe is CVE-2026-44292?
How do I fix CVE-2026-44292?
Are you affected by CVE-2026-44292?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST