{"cve":"CVE-2026-41838","nvd":{"published":"2026-06-09T05:16:35.723","modified":"2026-07-23T08:10:00.137","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-330"],"references":["https://spring.io/security/cve-2026-41838"],"products":["vmware:spring_framework"],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-41838","score":0.00171,"percentile":0.06463,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-q723-847q-5g8g","url":"https://osv.dev/vulnerability/GHSA-q723-847q-5g8g","summary":"Spring Framework Predictable Session ID in WebSocket Module","modified":"2026-07-29T18:26:45.363620Z","packages":[{"ecosystem":"Maven","name":"org.springframework:spring-websocket","purl":"pkg:maven/org.springframework/spring-websocket","ranges":[">=7.0.0 <7.0.8"],"fixed":["7.0.8"]},{"ecosystem":"Maven","name":"org.springframework:spring-websocket","purl":"pkg:maven/org.springframework/spring-websocket","ranges":[">=6.2.0 <6.2.19"],"fixed":["6.2.19"]},{"ecosystem":"Maven","name":"org.springframework:spring-websocket","purl":"pkg:maven/org.springframework/spring-websocket","ranges":[">=6.1.0 <=6.1.27"],"fixed":[]},{"ecosystem":"Maven","name":"org.springframework:spring-websocket","purl":"pkg:maven/org.springframework/spring-websocket","ranges":["<=5.3.48"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}