{
"id": "GHSA-6q5m-22mq-q2xv",
"aliases": [
"CVE-2021-31920"
],
"details": "Istio before 1.8.6 and 1.9.x before 1.9.5 has a remotely exploitable vulnerability where an HTTP request path with multiple slashes or escaped slash characters (%2F or %5C) could potentially bypass an Istio authorization policy when path based authorization rules are used.",
"summary": "Istio Authorization Bypass Vulnerability",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.6"
}
]
}
],
"package": {
"name": "istio.io/istio",
"ecosystem": "Go"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.9.0"
},
{
"fixed": "1.9.5"
}
]
}
],
"package": {
"name": "istio.io/istio",
"ecosystem": "Go"
},
"database_specific": {
"last_known_affected_version_range": "<= 1.9.4"
}
}
],
"modified": "2023-08-07T20:57:01Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"published": "2022-05-24T19:03:32Z",
"withdrawn": "2023-08-07T20:57:01Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31920",
"type": "ADVISORY"
},
{
"url": "https://istio.io/latest/news/security/istio-security-2021-005",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-863"
],
"severity": "MODERATE",
"github_reviewed": true,
"nvd_published_at": "2021-05-27T05:15:00Z",
"github_reviewed_at": "2023-07-11T16:53:41Z"
}
}