Spring Framework Predictable Session ID in WebSocket Module_CVE-2026-41838

4.8 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Description

IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules.

Affected versions:
Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.

Basic Information

ID CVE-2026-41838

Source vmware

Published Jun 9, 2026 at 03:49

Affected Product

Vendor Spring

Product Spring Framework

Version 7.0.0

Affected Versions Spring Spring Framework 7.0.0
Spring Spring Framework 6.2.0
Spring Spring Framework 6.1.0
Spring Spring Framework 5.3.0

CWE Classification

CWE-330

References

spring.io /security/cve-2026-41838

{
    "lastseen": "",
    "description": "IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules.\n\nAffected versions:\nSpring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.",
    "published": "2026-06-09T03:49:15.933Z",
    "modified": "2026-06-09T03:49:15.933Z",
    "type": "cve",
    "title": "Spring Framework Predictable Session ID in WebSocket Module",
    "source": "vmware",
    "references": "https://spring.io/security/cve-2026-41838",
    "id": "CVE-2026-41838",
    "bulletinFamily": "",
    "cwe": [
        "CWE-330"
    ],
    "cvelist": null,
    "sourceData": "Spring Spring Framework 7.0.0\nSpring Spring Framework 6.2.0\nSpring Spring Framework 6.1.0\nSpring Spring Framework 5.3.0",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Spring Framework",
    "version": "7.0.0",
    "vendor": "Spring",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}