CVE-2026-0994
Denial of Service in Python Protobuf
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka red hat
Python
oss-project·US
ООО «Ред Софт»
commercial·RUaka red soft
АО «СберТех»
commercial·RUaka сбертех, ao sbertech
Google Inc
commercial·USaka google, google llc
PyPI
package-ecosystem
and 1 more affected products View all →
Exploitability
Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Impact
References
https://github.com/protocolbuffers/protobuf/pull/25239
github.com
https://github.com/protocolbuffers/protobuf/pull/25239
github.com
https://access.redhat.com/security/cve/cve-2026-0994
access.redhat.com
and 26 more references View all →
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