cbcvebase.
CVE-2026-0994
published 2026-01-23

CVE-2026-0994: 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…

PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.61%
45.3th percentile
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.

Affected

6 ranges
VendorProductVersion rangeFixed in
debianprotobuf
googleprotobuf<= 33.4
googleprotobuf>= 0 < 5.29.65.29.6
googleprotobuf>= 6.30.0rc1 < 6.33.56.33.5
pythonprotobuf
ubuntuprotobuf

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv4.08.2HIGHCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv8.2HIGH
vendor_debian8.2HIGH
vendor_redhat8.2HIGH
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