CVE-2021-31920

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Source
https://cve.org/CVERecord?id=CVE-2021-31920
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31920.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-31920
Downstream
Published
2021-05-27T05:15:06.880Z
Modified
2026-04-10T04:32:37.359560Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
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.

References

Affected packages

Git / github.com/istio/istio

Affected ranges

Type
GIT
Repo
https://github.com/istio/istio
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1aa9fc7a594d6ffc88ff8fd6cd416d8bafe4b214
Introduced
b63e1966c245924b10a0915a671a656540ed7a45
Fixed
67362755b7ca63ff1442d627a733627ed5c75df4
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.8.6"
        },
        {
            "introduced": "1.9.0"
        },
        {
            "fixed": "1.9.5"
        }
    ]
}

Affected versions

0.*
0.3.0
0.5.0
0.6.0
1.*
1.0.0-snapshot.0
1.1.0-snapshot.2
1.1.0.snapshot.0
1.1.0.snapshot.1
1.2.0-rc.0
1.2.0-rc.3
1.5.0-alpha.0
1.5.0-beta.1
1.5.0-beta.2
1.6.0-alpha.0
1.6.0-alpha.1
1.6.0-alpha.2
1.7.0-alpha.0
1.8.0
1.8.0-alpha.0
1.8.0-alpha.2
1.8.0-rc.0
1.8.0-rc.1
1.8.1
1.8.2
1.8.3
1.8.4
1.9.0
1.9.1
1.9.2
1.9.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31920.json"