CVE-2025-4565
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2025
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Unbounded recursion in Python Protobuf
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 crashing the application with a RecursionError. We recommend upgrading to version =>6.31.1 or beyond commit 17838beda2943d08b8a9d4df5b68f5f04f26d901
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Python-Protobuf
- Vendor
- protocolbuffers
- Product
- Python-Protobuf
- Platforms
- Unknown
- Default status
unaffected- Package
- protobuf
- Package collection
- https://github.com/protocolbuffers/protobuf/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | semver | 4.25.8 | Unavailable | None listed |
| 0 | affected | semver | 5.29.5 | Unavailable | None listed |
| 0 | affected | semver | 6.31.1 | Unavailable | None listed |
Python-Protobuf
- Vendor
- protocolbuffers
- Product
- Python-Protobuf
- Platforms
- Unknown
- Default status
unaffected- Package collection
- https://pypi.org/project/protobuf/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 0 | affected | semver | 4.25.8 | Unavailable | None listed |
| 0 | affected | semver | 5.29.5 | Unavailable | None listed |
| 0 | affected | semver | 6.31.1 | Unavailable | None listed |