CVE-2021-26918

Katalog CVE

CVSS 9.8 · Critical EPSS 2,6%

Kerentanan Unrestricted Upload of File with Dangerous Type pada probot bot. Skor CVSS 3.1 9.8 (Critical) menurut NVD.

Deskripsi (NVD)

The ProBot bot through 2021-02-08 for Discord might allow attackers to interfere with the intended purpose of the "Send an image when a user joins the server" feature (or possibly have unspecified other impact) because the uploader web service allows double extensions (such as .html.jpg) with the text/html content type. NOTE: there may not be cases in which an uploader web service is customer controlled; however, the nature of the issue has substantial interaction with customer controlled configuration. NOTE: the vendor states "This is just an uploader (like any other one) which uploads files to cloud storage and accepts various file types. There is no kind of vulnerability and it won't compromise either the client side or the server side.

Rincian

Terbit di NVD

9 Februari 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.8 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-434: Unrestricted Upload of File with Dangerous Type

EPSS (30 hari)

2,6% peluang dieksploitasi; lebih tinggi dari 84,8% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• http://packetstormsecurity.com/files/161347/Discord-Probot-Arbitrary-File-Upload.html exploit · advisory pihak ketiga · vdb entry
• https://raw.githubusercontent.com/TheLastVvV/Vulnerability-Reports-and-CVE/main/Reports/Discord%20Probot%20-%2... exploit · advisory pihak ketiga