protobuf-python has a potential Denial of Service issue

SummaryAny project that uses Protobuf pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit.Reporter: Alexis Challande, Trail of Bits...

PYSEC-2026-1806 protobuf-python has a potential Denial of Service issue

Summary Any project that uses Protobuf pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. Reporter: Alexis Challande, Trail of Bits...

SUSE-SU-2026:1653-1 Security update for protobuf

This update for protobuf fixes the following issues: Refresh fixes: - CVE-2025-4565: parsing of untrusted Protocol Buffers data containing an arbitrary number of recursive groups or messages can lead to crash due to RecursionError bsc1244663. - CVE-2026-0994: maxrecursiondepth limit can be bypass...

Protobuf Pure-Python backend can be corrupted by exceeding the Python recursion limit

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashin...

EUVD-2025-18401

Malicious code in bioql PyPI...

OESA-2025-1713 protobuf security update

Security Fixes: Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of...

GHSA-8QVM-5X2C-J2W7 protobuf-python has a potential Denial of Service issue

Summary Any project that uses Protobuf pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. Reporter: Alexis Challande, Trail of Bits...

CVE-2025-4565

Any project that uses Protobuf Pure-Python backend to parse untrusted Protocol Buffers data containing an arbitrary number of recursive groups, recursive messages or a series of SGROUP tags can be corrupted by exceeding the Python recursion limit. This can result in a Denial of service by crashin...

PT-2025-25564

Name of the Vulnerable Software and Affected Versions Protobuf versions prior to 6.31.1 Description The issue affects projects that use the Protobuf Pure-Python backend to parse untrusted Protocol Buffers data. This data can contain an arbitrary number of recursive groups, recursive messages, or ...