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Vulnerabilities CVE-2026-0994

CVE-2026-0994

High
Open
TLP:CLEAR

Denial of Service in Python Protobuf

AI Analysis

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Description

A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages. Due to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python’s recursion stack and causing a RecursionError.

Details

CVSS Score
8.2
EPSS Score
0.66%

48.4th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
Confidence
90%
Published
Jan 23, 2026
Last Modified
Jul 15, 2026
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