CVE-2020-13443

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Source

https://cve.org/CVERecord?id=CVE-2020-13443

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13443.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2020-13443

Published

2020-06-24T15:15:11.617Z

Modified

2026-03-14T10:06:04.146301Z

Severity

8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

ExpressionEngine before 5.3.2 allows remote attackers to upload and execute arbitrary code in a .php%20 file via Compose Msg, Add attachment, and Save As Draft actions. A user with low privileges (member) is able to upload this. It is possible to bypass the MIME type check and file-extension check while uploading new files. Short aliases are not used for an attachment; instead, direct access is allowed to the uploaded files. It is possible to upload PHP only if one has member access, or registration/forum is enabled and one can create a member with the default group id of 5. To exploit this, one must to be able to send and compose messages (at least).

References

Affected packages

Git / github.com/expressionengine/expressionengine

Affected ranges

Type

GIT

Repo

https://github.com/expressionengine/expressionengine

Events

Introduced

Fixed

82d7d2d68e8b6e4244489b3ce051305e83af8824

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.3.2"
        }
    ]
}

Affected versions

2.*

2.10.1

4.*

4.3.6

5.*

5.0.0

5.0.1

5.0.2

5.1.0

5.1.0-dp.1

5.1.1

5.1.2

5.1.3

5.2.0

5.2.1

5.2.2

5.2.3

5.2.4

5.2.5

5.2.6

5.3.0

5.3.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-13443.json"