What is CVE-2026-121866?

CVE-2026-121866 is a high-severity vulnerability in Ileads Sms Gateway By Exsile, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-11-07.

How severe is CVE-2026-121866?

High severity. CVSS v3 base score is 8.8 out of 10.

Privilege escalation in Ileads Sms Gateway By Exsile

CVE-2026-121866

The iLeads SMS Gateway by Exsile WordPress plugin before 2.0.0 does not check capabilities or nonces in several AJAX actions that update a site option chosen by the request, allowing any authenticated user, such as a subscriber, to change arbitrary WordPress options and escalate to administrator, for example by enabling registration with administrator as the default role.

Vulnerability class: Privilege Escalation

Published 2026-11-07 · last modified 2026-11-07.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Ileads Sms Gateway By Exsile

Weakness classification (CWE)

CWE-269 — Improper Privilege Management

References

wpscan.com/vulnerability/b1fca9ef-8839-4030-88ab-c2bcdd79f488/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-121866?: CVE-2026-121866 is a high-severity vulnerability in Ileads Sms Gateway By Exsile, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-11-07.
How severe is CVE-2026-121866?: High severity. CVSS v3 base score is 8.8 out of 10.