What is CVE-2026-3826?

CVE-2026-3826 is a critical-severity vulnerability in Wellchoose Iftop, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2026-03-11.

How severe is CVE-2026-3826?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Wellchoose Iftop

CVE-2026-3826

IFTOP developed by WellChoose has a Local File Inclusion vulnerability, allowing unauthenticated remote attackers to execute arbitrary code on the server.

Published 2026-03-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (56.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.003

Affected products

Wellchoose Iftop — versions 0
Wellchoose Organization Portal System

Weakness classification (CWE)

CWE-98 — PHP Remote File Inclusion

References

www.twcert.org.tw/tw/cp-132-10755-94136-1.html (Third Party Advisory, third-party-advisory)
www.twcert.org.tw/en/cp-139-10756-73f66-2.html (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-3826?: CVE-2026-3826 is a critical-severity vulnerability in Wellchoose Iftop, classified under PHP Remote File Inclusion. CVSS score: 9.8/10. Published 2026-03-11.
How severe is CVE-2026-3826?: Critical severity. CVSS v3 base score is 9.8 out of 10.