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        "cveId": "CVE-2025-61765",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2025-09-30T19:43:49.899Z",
        "datePublished": "2025-10-06T16:04:22.559Z",
        "dateUpdated": "2025-10-22T17:13:12.129Z"
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    "containers": {
        "cna": {
            "title": "python-socketio vulnerable to arbitrary Python code execution (RCE) through malicious pickle deserialization in certain multi-server deployments",
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                    "descriptions": [
                        {
                            "cweId": "CWE-502",
                            "lang": "en",
                            "description": "CWE-502: Deserialization of Untrusted Data",
                            "type": "CWE"
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                }
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                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 6.4,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "HIGH",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L",
                        "version": "3.1"
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            "references": [
                {
                    "name": "https://github.com/miguelgrinberg/python-socketio/security/advisories/GHSA-g8c6-8fjj-2r4m",
                    "tags": [
                        "x_refsource_CONFIRM"
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                    "url": "https://github.com/miguelgrinberg/python-socketio/security/advisories/GHSA-g8c6-8fjj-2r4m"
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                {
                    "name": "https://github.com/miguelgrinberg/python-socketio/commit/53f6be094257ed81476b0e212c8cddd6d06ca39a",
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                    "url": "https://github.com/miguelgrinberg/python-socketio/commit/53f6be094257ed81476b0e212c8cddd6d06ca39a"
                },
                {
                    "name": "https://www.bluerock.io/post/cve-2025-61765-bluerock-discovers-critical-rce-in-socket-io-ecosystem",
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                        "x_refsource_MISC"
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                    "url": "https://www.bluerock.io/post/cve-2025-61765-bluerock-discovers-critical-rce-in-socket-io-ecosystem"
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            "affected": [
                {
                    "vendor": "miguelgrinberg",
                    "product": "python-socketio",
                    "versions": [
                        {
                            "version": ">= 0.8.0, < 5.14.0",
                            "status": "affected"
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                    "lang": "en",
                    "value": "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."
                }
            ],
            "source": {
                "advisory": "GHSA-g8c6-8fjj-2r4m",
                "discovery": "UNKNOWN"
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                                "id": "CVE-2025-61765",
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                                        "Exploitation": "none"
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                                        "Automatable": "no"
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                                        "Technical Impact": "total"
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                "references": [
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                        "url": "https://www.bluerock.io/post/cve-2025-61765-bluerock-discovers-critical-rce-in-socket-io-ecosystem"
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}