CVE-2025-4565

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

Affected software

No affected versions have been published.

Timeline

Published
Jun 16, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-4565: Medium severity, CVSS 5.3 | Vulnix