Uncontrolled recursion in protobuf - CVE-2026-0994
Published: February 20, 2026
Vulnerability identifier: #VU123116
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-2026-0994
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Google
Affected software:
protobuf
protobuf
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to uncontrolled recursion in within the google.protobuf.json_format.ParseDict(). A remote attacker can pass specially crafted input to the application and perform a denial of service attack.
How to mitigate CVE-2026-0994
Install updates from vendor's website.