CVE-2026-52891

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Source
https://cve.org/CVERecord?id=CVE-2026-52891
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52891.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-52891
Aliases
  • GHSA-35j7-h385-2q9g
Published
2026-07-15T21:08:02Z
Modified
2026-08-12T03:51:09Z
Severity
  • 9.9 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
Summary
Wekan: Shell Injection via Avatar Upload
Details

Wekan is open source kanban built with Meteor. Prior to 9.07, Wekan avatar upload functionality embeds user-supplied filenames into paths later passed to child_process.exec() for MIME-type detection. Because models/avatars.js and models/fileValidation.js used a shell command with the avatar filename, shell metacharacters such as backticks and $() in the filename could execute commands on the server. This issue is fixed in version 9.07.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-78",
        "CWE-88"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/52xxx/CVE-2026-52891.json"
}
References

Affected packages

Git / github.com/wekan/wekan

Affected ranges

Type
GIT
Repo
https://github.com/wekan/wekan
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
a4c74a5980e9f778eb444fd346f32aa3d16786a9
Fixed
ebaa31c1e0d56ba86aff10914d2cebc66f612cf5
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "9.07"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

4.*
4.30
4.31
Other
stable
v0.*
v0.10-rc2
v0.10.0
v0.10.0-rc1
v0.10.0-rc3
v0.10.0-rc4
v0.11.0-rc1
v0.11.0-rc2
v0.11.1-rc1
v0.11.1-rc2
v0.12
v0.13
v0.16
v0.17
v0.18
v0.19
v0.20
v0.21
v0.22
v0.23
v0.24
v0.25
v0.26
v0.27
v0.28
v0.29
v0.30
v0.31
v0.32
v0.33
v0.34
v0.35
v0.36
v0.37
v0.38
v0.39
v0.40
v0.41
v0.42
v0.43
v0.44
v0.45
v0.46
v0.47
v0.48
v0.49
v0.50
v0.51
v0.52
v0.54
v0.55
v0.56
v0.57
v0.58
v0.59
v0.60
v0.61
v0.62
v0.63
v0.65
v0.66
v0.67
v0.68
v0.69
v0.70
v0.71
v0.72
v0.73
v0.74
v0.75
v0.76
v0.77
v0.78
v0.79
v0.80
v0.81
v0.82
v0.83
v0.84
v0.85
v0.86
v0.87
v0.88
v0.89
v0.9.0-rc1
v0.9.0-rc2
v0.90
v0.91
v0.92
v0.93
v0.94
v0.95
v1.*
v1.06
v1.07
v1.08
v1.09
v1.10
v1.11
v1.12
v1.13
v1.14
v1.15
v1.16
v1.17
v1.18
v1.19
v1.20
v1.21
v1.23
v1.24
v1.25
v1.26
v1.27
v1.29
v1.30
v1.31
v1.32
v1.33
v1.34
v1.35
v1.36
v1.37
v1.38
v1.39
v1.40
v1.41
v1.42
v1.43
v1.44
v1.45
v1.46
v1.47
v1.49-edge-1
v1.49.1
v1.50.1
v1.50.2
v1.50.3
v1.51.1
v1.51.2
v1.52.1
v1.53.1
v1.53.2
v1.53.3
v1.53.4
v1.53.5
v1.53.6
v1.53.7
v1.53.8
v1.53.9
v1.55.1
v1.57
v1.58
v1.59
v1.60
v1.61
v1.62
v1.63
v1.64
v1.64.1
v1.64.2
v1.65
v1.66
v1.67
v1.68
v1.69
v1.69.2
v2.*
v2.60.1
v2.94
v2.98
v2.99
v3.*
v3.00
v3.01
v3.02
v3.03
v3.04
v3.05
v3.06
v3.07
v3.08
v3.09
v3.10
v3.11
v3.12
v3.13
v3.14
v3.15
v3.16
v3.17
v3.18
v3.19
v3.20
v3.21
v3.22
v3.23
v3.24
v3.25
v3.26
v3.27
v3.29
v3.30
v3.31
v3.32
v3.33
v3.34
v3.35
v3.36
v3.37
v3.38
v3.39
v3.40
v3.41
v3.42
v3.43
v3.44
v3.45
v3.46
v3.47
v3.48
v3.49
v3.50
v3.51
v3.52
v3.53
v3.54
v3.55
v3.56
v3.57
v3.58
v3.59
v3.60
v3.61
v3.62
v3.63
v3.64
v3.65
v3.66
v3.67
v3.68
v3.69
v3.70
v3.71
v3.73
v3.74
v3.75
v3.76
v3.77
v3.78
v3.79
v3.80
v3.81
v3.82
v3.83
v3.84
v3.85
v3.86
v3.87
v3.88
v3.89
v3.90
v3.91
v3.92
v3.93
v3.94
v3.95
v3.96
v3.97
v3.98
v3.99
v4.*
v4.00
v4.01
v4.02
v4.03
v4.04
v4.05
v4.06
v4.07
v4.08
v4.09
v4.10
v4.11
v4.12
v4.13
v4.14
v4.15
v4.16
v4.17
v4.18
v4.19
v4.20
v4.21
v4.22
v4.23
v4.24
v4.25
v4.26
v4.27
v4.28
v4.29
v4.32
v4.33
v4.34
v4.35
v4.36
v4.37
v4.38
v4.39
v4.40
v4.41
v4.42
v4.43
v4.44
v4.45
v4.46
v4.47
v4.48
v4.49
v4.50
v4.51
v4.52
v4.53
v4.54
v4.55
v4.56
v4.57
v4.58
v4.59
v4.60
v4.61
v4.62
v4.63
v4.64
v4.65
v4.66
v4.67
v4.68
v4.69
v4.70
v4.71
v4.72
v4.73
v4.74
v4.75
v4.76
v4.77
v4.78
v4.79
v4.80
v4.81
v4.82
v4.83
v4.84
v4.85
v4.86
v4.87
v4.88
v4.89
v4.90
v4.91
v4.92
v4.93
v4.94
v4.95
v4.96
v4.98
v4.99
v5.*
v5.00
v5.01
v5.02
v5.03
v5.04
v5.05
v5.06
v5.07
v5.08
v5.09
v5.10
v5.11
v5.12
v5.13
v5.14
v5.15
v5.16
v5.17
v5.18
v5.19
v5.20
v5.21
v5.22
v5.23
v5.24
v5.25
v5.26
v5.27
v5.29
v5.30
v5.31
v5.32
v5.33
v5.34
v5.35
v5.36
v5.37
v5.38
v5.39
v5.40
v5.41
v5.42
v5.43
v5.44
v5.45
v5.46
v5.47
v5.48
v5.49
v5.50
v5.51
v5.52
v5.53
v5.54
v5.55
v5.56
v5.57
v5.58
v5.59
v5.60
v5.61
v5.62
v5.63
v5.64
v5.65
v5.66
v5.67
v5.68
v5.69
v5.70
v5.71
v5.72
v5.73
v5.74
v5.75
v5.76
v5.77
v5.78
v5.79
v5.80
v5.81
v5.82
v5.83
v5.84
v5.85
v5.86
v5.87
v5.88
v5.89
v5.90
v5.91
v5.92
v5.93
v5.94
v5.95
v5.96
v5.97
v5.98
v5.99
v6.*
v6.00
v6.01
v6.02
v6.03
v6.04
v6.05
v6.10
v6.11
v6.12
v6.13
v6.14
v6.15
v6.16
v6.17
v6.18
v6.23
v6.24
v6.25
v6.26
v6.27
v6.28
v6.29
v6.30
v6.31
v6.32
v6.33
v6.34
v6.35
v6.36
v6.37
v6.38
v6.39
v6.40
v6.41
v6.42
v6.43
v6.44
v6.45
v6.46
v6.47
v6.48
v6.49
v6.50
v6.51
v6.52
v6.53
v6.54
v6.55
v6.56
v6.57
v6.58
v6.59
v6.60
v6.61
v6.62
v6.65
v6.67
v6.68
v6.69
v6.70
v6.71
v6.72
v6.73
v6.74
v6.75
v6.76
v6.77
v6.78
v6.79
v6.80
v6.81
v6.82
v6.83
v6.84
v6.85
v6.86
v6.87
v6.88
v6.89
v6.90
v6.91
v6.92
v6.93
v6.95
v6.96
v6.97
v6.98
v6.99
v6.99.1
v6.99.2
v6.99.3
v6.99.4
v6.99.5
v6.99.6
v6.99.7
v6.99.8
v6.99.9
v7.*
v7.00
v7.01
v7.02
v7.03
v7.04
v7.05
v7.06
v7.07
v7.08
v7.09
v7.10
v7.11
v7.12
v7.14
v7.15
v7.16
v7.17
v7.18
v7.19
v7.20
v7.21
v7.22
v7.23
v7.24
v7.25
v7.26
v7.27
v7.28
v7.29
v7.30
v7.31
v7.32
v7.33
v7.34
v7.35
v7.36
v7.37
v7.38
v7.39
v7.40
v7.41
v7.42
v7.43
v7.44
v7.45
v7.46
v7.47
v7.48
v7.49
v7.50
v7.51
v7.52
v7.53
v7.54
v7.55
v7.56
v7.57
v7.58
v7.59
v7.60
v7.61
v7.62
v7.63
v7.64
v7.65
v7.67
v7.68
v7.69
v7.70
v7.71
v7.72
v7.73
v7.74
v7.75
v7.76
v7.77
v7.78
v7.79
v7.80
v7.81
v7.82
v7.83
v7.84
v7.85
v7.86
v7.87
v7.88
v7.89
v7.90
v7.91
v7.92
v7.93
v7.95
v7.96
v7.97
v7.98
v7.99
v8.*
v8.00
v8.01
v8.02
v8.03
v8.04
v8.05
v8.06
v8.08
v8.09
v8.10
v8.11
v8.12
v8.14
v8.15
v8.16
v8.17
v8.18
v8.19
v8.20
v8.21
v8.22
v8.23
v8.24
v8.25
v8.26
v8.27
v8.28
v8.29
v8.30
v8.31
v8.32
v8.33
v8.34
v8.38
v8.39
v8.40
v8.43
v8.44
v8.45
v8.46
v8.47
v8.48
v8.49
v8.50
v8.51
v8.52
v8.53
v8.54
v8.55
v8.56
v8.57
v8.58
v8.59
v8.60
v8.61
v8.62
v8.63
v8.64
v8.65
v8.67
v8.68
v8.69
v8.70
v8.71
v8.72
v8.73
v8.74
v8.75
v8.76
v8.77
v8.78
v8.79
v8.80
v8.81
v8.82
v8.83
v8.84
v8.85
v8.86
v8.87
v8.88
v8.89
v8.90
v8.91
v8.92
v8.93
v8.94
v8.97
v8.98
v9.*
v9.00
v9.01
v9.02
v9.03
v9.04
v9.05
v9.06

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-52891.json"