{"id":"CVE-2026-41838","title":"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.…","summary":"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.…","severity":"medium","cvss":4.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N","cwe":["CWE-330"],"vendor":"vmware","product":"spring_framework","affected":["spring_framework >= 5.3.0, < 5.3.49","spring_framework >= 6.1.0, < 6.1.28","spring_framework >= 6.2.0, < 6.2.18.1","spring_framework >= 7.0.0, < 7.0.7.1"],"patched":["spring_framework 7.0.7.1"],"published":"2026-06-09","updated":"2026-07-17","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-41838","references":[{"url":"https://spring.io/security/cve-2026-41838","label":"security@vmware.com"}],"tags":["nvd"],"epss":0.00171,"epssPercentile":0.06819,"ingestedAt":"2026-07-17T21:16:23.702Z","slug":"CVE-2026-41838","body":"## Overview\n\nIDs 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.\n\n## Affected\n\n- `spring_framework >= 5.3.0, < 5.3.49`\n- `spring_framework >= 6.1.0, < 6.1.28`\n- `spring_framework >= 6.2.0, < 6.2.18.1`\n- `spring_framework >= 7.0.0, < 7.0.7.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `spring_framework 7.0.7.1`","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":26.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}