CVE-2026-59876
1 advisory.
npm/protobufjs CVE-2026-59876: medium 4.8
protobufjs: Text Format string map parsing can mutate returned map object prototype
Action: Upgrade protobufjs to 8.6.5 or later.
npm i protobufjs@8.6.5Affected
| introduced | fixed | last affected |
|---|---|---|
| 8.2.0 | 8.6.5 | - |
Fixed versions
| 8.6.5 |
Sources
- osv: GHSA-jfj6-75fj-8934
- https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934
- https://nvd.nist.gov/vuln/detail/CVE-2026-59876
- https://github.com/protobufjs/protobuf.js/pull/2335
- https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
- https://github.com/protobufjs/protobuf.js
- https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5
CVE-2026-59876 · published · modified · JSON