Auth bypass in Stellarwp Ithemes Sync

CVE-2026-27056

Missing Authorization vulnerability in StellarWP iThemes Sync ithemes-sync allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects iThemes Sync: from n/a through <= 3.2.8.

Vulnerability class: Broken Access Control

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (16.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.5% 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-2026-27056: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-27056?
CVE-2026-27056 is a medium-severity vulnerability in Stellarwp Ithemes Sync, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-02-19.
How severe is CVE-2026-27056?
Medium severity. CVSS v3 base score is 4.3 out of 10.