{
"id": "GHSA-q723-847q-5g8g",
"aliases": [
"CVE-2026-41838"
],
"details": "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.",
"summary": "Spring Framework Predictable Session ID in WebSocket Module",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.8"
}
]
}
],
"package": {
"name": "org.springframework:spring-websocket",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 7.0.7"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.2.0"
},
{
"fixed": "6.2.19"
}
]
}
],
"package": {
"name": "org.springframework:spring-websocket",
"ecosystem": "Maven"
},
"database_specific": {
"last_known_affected_version_range": "<= 6.2.18"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.1.0"
},
{
"last_affected": "6.1.27"
}
]
}
],
"package": {
"name": "org.springframework:spring-websocket",
"ecosystem": "Maven"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.3.48"
}
]
}
],
"package": {
"name": "org.springframework:spring-websocket",
"ecosystem": "Maven"
}
}
],
"modified": "2026-07-29T18:08:19Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N"
}
],
"published": "2026-06-09T06:31:57Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41838",
"type": "ADVISORY"
},
{
"url": "https://github.com/spring-projects/spring-framework/issues/36740",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-framework/commit/a42a6e0c6ac64eb18954729ca5e3fe64b05a39b5",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-framework/commit/bff98999056fc29b573ff47ad2433462eb52833c",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-framework",
"type": "PACKAGE"
},
{
"url": "https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19",
"type": "WEB"
},
{
"url": "https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8",
"type": "WEB"
},
{
"url": "https://spring.io/security/cve-2026-41838",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-330"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2026-06-09T05:16:35Z",
"github_reviewed_at": "2026-07-29T18:08:19Z"
}
}