Vulnerability Details CVE-2021-31999
A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 58.7%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.5
Products affected by CVE-2021-31999
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cpe:2.3:a:rancher:rancher:1.0.0
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cpe:2.3:a:rancher:rancher:1.2.0
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cpe:2.3:a:rancher:rancher:1.2.1
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cpe:2.3:a:rancher:rancher:1.2.2
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cpe:2.3:a:rancher:rancher:1.2.3
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cpe:2.3:a:rancher:rancher:1.2.4
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cpe:2.3:a:rancher:rancher:1.3.0
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cpe:2.3:a:rancher:rancher:1.3.1
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cpe:2.3:a:rancher:rancher:1.3.2
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cpe:2.3:a:rancher:rancher:1.3.3
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cpe:2.3:a:rancher:rancher:1.3.4
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cpe:2.3:a:rancher:rancher:1.3.5
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cpe:2.3:a:rancher:rancher:1.4.0
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cpe:2.3:a:rancher:rancher:1.4.1
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cpe:2.3:a:rancher:rancher:1.4.2
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cpe:2.3:a:rancher:rancher:1.4.3
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cpe:2.3:a:rancher:rancher:1.5.0
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cpe:2.3:a:rancher:rancher:1.5.1
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cpe:2.3:a:rancher:rancher:1.5.2
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cpe:2.3:a:rancher:rancher:1.5.3
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cpe:2.3:a:rancher:rancher:1.5.5
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cpe:2.3:a:rancher:rancher:1.6.18
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cpe:2.3:a:rancher:rancher:1.6.19
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cpe:2.3:a:rancher:rancher:1.6.20
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cpe:2.3:a:rancher:rancher:1.6.21
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cpe:2.3:a:rancher:rancher:1.6.22
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cpe:2.3:a:rancher:rancher:1.6.23
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cpe:2.3:a:rancher:rancher:1.6.24
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cpe:2.3:a:rancher:rancher:1.6.25
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cpe:2.3:a:rancher:rancher:1.6.26
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cpe:2.3:a:rancher:rancher:1.6.28
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cpe:2.3:a:rancher:rancher:1.6.29
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cpe:2.3:a:rancher:rancher:1.6.30
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cpe:2.3:a:rancher:rancher:2.0.0
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cpe:2.3:a:rancher:rancher:2.0.1
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cpe:2.3:a:rancher:rancher:2.0.10
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cpe:2.3:a:rancher:rancher:2.0.11
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cpe:2.3:a:rancher:rancher:2.0.12
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cpe:2.3:a:rancher:rancher:2.0.13
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cpe:2.3:a:rancher:rancher:2.0.2
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cpe:2.3:a:rancher:rancher:2.0.3
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cpe:2.3:a:rancher:rancher:2.0.4
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cpe:2.3:a:rancher:rancher:2.0.5
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cpe:2.3:a:rancher:rancher:2.0.6
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cpe:2.3:a:rancher:rancher:2.0.7
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cpe:2.3:a:rancher:rancher:2.0.8
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cpe:2.3:a:rancher:rancher:2.0.9
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cpe:2.3:a:rancher:rancher:2.1.0
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cpe:2.3:a:rancher:rancher:2.1.1
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cpe:2.3:a:rancher:rancher:2.1.14
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cpe:2.3:a:rancher:rancher:2.1.2
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cpe:2.3:a:rancher:rancher:2.1.3
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cpe:2.3:a:rancher:rancher:2.1.4
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cpe:2.3:a:rancher:rancher:2.1.5
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cpe:2.3:a:rancher:rancher:2.1.6
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cpe:2.3:a:rancher:rancher:2.1.7
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cpe:2.3:a:rancher:rancher:2.1.8
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cpe:2.3:a:rancher:rancher:2.2.0
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cpe:2.3:a:rancher:rancher:2.2.1
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cpe:2.3:a:rancher:rancher:2.2.11
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cpe:2.3:a:rancher:rancher:2.2.13
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cpe:2.3:a:rancher:rancher:2.2.2
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cpe:2.3:a:rancher:rancher:2.2.3
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cpe:2.3:a:rancher:rancher:2.2.4
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cpe:2.3:a:rancher:rancher:2.2.5
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cpe:2.3:a:rancher:rancher:2.2.6
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cpe:2.3:a:rancher:rancher:2.2.7
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cpe:2.3:a:rancher:rancher:2.2.8
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cpe:2.3:a:rancher:rancher:2.2.9
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cpe:2.3:a:rancher:rancher:2.3.0
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cpe:2.3:a:rancher:rancher:2.3.1
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cpe:2.3:a:rancher:rancher:2.3.10
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cpe:2.3:a:rancher:rancher:2.3.13
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cpe:2.3:a:rancher:rancher:2.3.2
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cpe:2.3:a:rancher:rancher:2.3.3
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cpe:2.3:a:rancher:rancher:2.3.4
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cpe:2.3:a:rancher:rancher:2.3.5
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cpe:2.3:a:rancher:rancher:2.3.6
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cpe:2.3:a:rancher:rancher:2.3.7
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cpe:2.3:a:rancher:rancher:2.3.8
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cpe:2.3:a:rancher:rancher:2.3.9
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cpe:2.3:a:rancher:rancher:2.4.0
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cpe:2.3:a:rancher:rancher:2.4.10
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cpe:2.3:a:rancher:rancher:2.4.11
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cpe:2.3:a:rancher:rancher:2.4.12
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cpe:2.3:a:rancher:rancher:2.4.13
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cpe:2.3:a:rancher:rancher:2.4.14
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cpe:2.3:a:rancher:rancher:2.4.15
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cpe:2.3:a:rancher:rancher:2.4.2
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cpe:2.3:a:rancher:rancher:2.4.3
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cpe:2.3:a:rancher:rancher:2.4.4
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cpe:2.3:a:rancher:rancher:2.4.5
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cpe:2.3:a:rancher:rancher:2.4.6
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cpe:2.3:a:rancher:rancher:2.4.7
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cpe:2.3:a:rancher:rancher:2.4.8
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cpe:2.3:a:rancher:rancher:2.4.9
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cpe:2.3:a:rancher:rancher:2.5.0
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cpe:2.3:a:rancher:rancher:2.5.1
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cpe:2.3:a:rancher:rancher:2.5.2
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cpe:2.3:a:rancher:rancher:2.5.3
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cpe:2.3:a:rancher:rancher:2.5.4
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cpe:2.3:a:rancher:rancher:2.5.5
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cpe:2.3:a:rancher:rancher:2.5.6
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cpe:2.3:a:rancher:rancher:2.5.7