Uncontrolled Recursion in protobuf.js - CVE-2026-44289
Published: May 12, 2026
Vulnerability identifier: #VU131167
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-44289
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: protobuf.js
Affected software:
protobuf.js
protobuf.js
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled recursion in the protobuf decoder when decoding nested protobuf binary data. A remote attacker can send a specially crafted protobuf binary payload to cause a denial of service.
This affects applications that decode untrusted protobuf binary input, including decoder paths that skip unknown group fields or decode nested message fields.
How to mitigate CVE-2026-44289
Install security update from vendor's website.