Upstream information
Description
python-socketio is a Python implementation of the Socket.IO realtime client and server. A remote code execution vulnerability in python-socketio versions prior to 5.14.0 allows attackers to execute arbitrary Python code through malicious pickle deserialization in multi-server deployments on which the attacker previously gained access to the message queue that the servers use for internal communications. When Socket.IO servers are configured to use a message queue backend such as Redis for inter-server communication, messages sent between the servers are encoded using the `pickle` Python module. When a server receives one of these messages through the message queue, it assumes it is trusted and immediately deserializes it. The vulnerability stems from deserialization of messages using Python's `pickle.loads()` function. Having previously obtained access to the message queue, the attacker can send a python-socketio server a crafted pickle payload that executes arbitrary code during deserialization via Python's `__reduce__` method. This vulnerability only affects deployments with a compromised message queue. The attack can lead to the attacker executing random code in the context of, and with the privileges of a Socket.IO server process. Single-server systems that do not use a message queue, and multi-server systems with a secure message queue are not vulnerable. In addition to making sure standard security practices are followed in the deployment of the message queue, users of the python-socketio package can upgrade to version 5.14.0 or newer, which remove the `pickle` module and use the much safer JSON encoding for inter-server messaging.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 6.4 | 6.4 |
| Vector | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L |
| Attack Vector | Adjacent Network | Adjacent Network |
| Attack Complexity | Low | Low |
| Privileges Required | High | High |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | High | High |
| Integrity Impact | High | High |
| Availability Impact | Low | Low |
| CVSSv3 Version | 3.1 | 3.1 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise Desktop 15 SP6 | python-python-socketio | Affected |
| SUSE Linux Enterprise Desktop 15 SP7 | python-python-socketio | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-python-socketio | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python-python-socketio | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP6 | python-python-socketio | Affected |
| SUSE Linux Enterprise Module for Python 3 15 SP7 | python-python-socketio | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-python-socketio | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python-python-socketio | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-python-socketio | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-python-socketio | Affected |
| openSUSE Leap 15.6 | python-python-socketio | Affected |
SUSE Timeline for this CVE
CVE page created: Mon Oct 6 20:02:35 2025CVE page last modified: Tue Oct 7 20:32:43 2025