CVE-2026-44288: fallo de gravedad media en protobufjs protobuf.js
protobufjs: Overlong UTF-8 decoding
Publicada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.3epss 0.3%
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs includes a minimal UTF-8 decoder that accepted overlong UTF-8 byte sequences and decoded them to their canonical characters instead of replacing them. An attacker who can provide protobuf binary data decoded through the affected UTF-8 path may be able to bypass application-level checks that inspect raw bytes before protobuf string decoding. For example, bytes that do not contain certain ASCII characters could decode to strings containing those characters. This vulnerability is fixed in 7.5.6 and 8.0.2.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Productos afectados
protobufjs · protobuf.jsCVEs relacionadas — protobufjs protobuf.js
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-41242CRITICALprotobufjs has an arbitrary code execution issueEPSS 0.8%CVE-2026-44289HIGHprotobufjs: Denial of service through unbounded protobuf recursionEPSS 0.6%CVE-2026-44291HIGHprotobufjs: Code generation gadget after prototype pollutionEPSS 0.5%CVE-2026-48712HIGHprotobufjs: Denial of service through unbounded Any expansion during JSON conversionEPSS 0.5%CVE-2026-44294MEDIUMprotobufjs: Denial of service from crafted field names in generated codeEPSS 0.4%CVE-2026-44293HIGHprotobufjs: Code injection through bytes field defaults in generated toObject codeEPSS 0.4%