CVE-2026-45740
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductProtobufjs
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-674CWE-674
How to fix
Update
- protobufjs_project protobufjs7.5.8, 8.2.0 or later
- protobufjs7.5.8, 8.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| protobufjs_project protobufjs | v < 7.5.8, 8.0.0 ≤ v < 8.2.0 | 7.5.8, 8.2.0 |
| protobufjsnpm | v < 7.5.8, 8.0.0 ≤ v < 8.2.0 | 7.5.8, 8.2.0 |
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