Auth bypass in Nedi

CVE-2021-26753

NeDi 1.9C allows an authenticated user to inject PHP code in the System Files function on the endpoint /System-Files.php via the txt HTTP POST parameter. This allows an attacker to obtain access to the operating system where NeDi is installed and to all application data.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.6th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-26753: held from 0.011 to 0.011.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

  • Nedi — versions 1.9c

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-26753?
CVE-2021-26753 is a critical-severity vulnerability in Nedi, classified under Incorrect Authorization. CVSS score: 9.9/10. Published 2021-02-12.
How severe is CVE-2021-26753?
Critical severity. CVSS v3 base score is 9.9 out of 10.