CVE-2026-45740
Last modified
CVE-2026-45740 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.8 and 8.2.0, protobufjs could recurse without a depth limit while expanding nested JSON descriptors through Root.fromJSON() and Namespace.addJSON(). A crafted JSON descriptor with deeply nested namespace definitions could cause the JavaScript call stack to be exhausted during descriptor loading. This vulnerability is fixed in 7.5.8 and 8.2.0.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Protobufjs Project | Protobufjs | < 7.5.8 |
| Protobufjs Project | Protobufjs | >= 8.0.0, < 8.2.0 |
References
- https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jggg-4jg4-v7c6Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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