CVE-2026-31048

Severity CVSS v4.0:

Pending analysis

Type:

CWE-94 Code Injection

Publication date:

13/04/2026

Last modified:

27/04/2026

Description

An issue in the pickle protocol of Pyro v3.x allows attackers to execute arbitrary code via supplying a crafted pickled string message.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

References to Advisories, Solutions, and Tools

https://github.com/Sif-0x01/security-advisories/security/advisories/GHSA-7625-w9h5-83rv
https://github.com/irmen/Pyro3/blob/master/Pyro/protocol.py#L672-L711
https://github.com/irmen/Pyro3/blob/master/docs/9-security.html#L341-L346