HIGH🇵🇱 Wersja polska

CVE-2026-44291

CVSS 8.1v3.1pub. 2026-05-13upd. 2026-05-14

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.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Protobufjs Project Protobufjs
APP
Protobufjs Project
< 7.5.68.0.0 – 8.0.2 (excl.)

🔵

CHECK WITH VENDOR

No clear patch data available. Check vendor references.

CWE

References

github.com/protobufjs/protobuf.js/security/advisories/G…

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