CVE-2026-41838
Spring Framework Predictable Session ID in WebSocket Module
CVSS Score
4.8
EPSS Score
0.0%
EPSS Percentile
9th
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.
| CWE | CWE-330 |
| Vendor | spring |
| Product | spring framework |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | Jun 9, 2026 |
| Last Updated | Jun 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
Spring / Spring Framework
7.0.0 < 7.0.8 6.2.0 < 6.2.19 6.1.0 < 6.1.28 5.3.0 < 5.3.49