What is CVE-2026-122222?

CVE-2026-122222 is a medium-severity vulnerability in Mbis Permalink Manager Lite, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-11-06.

How severe is CVE-2026-122222?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Mbis Permalink Manager Lite

CVE-2026-122222

The Permalink Manager Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slug' parameter in all versions up to, and including, 2.6.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. An Author-level attacker can submit a percent-encoded HTML/JavaScript payload as a post slug via the REST API, which survives sanitization intact and executes in an administrator's browser session when the URI Editor admin page is loaded.

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

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

Mbis Permalink Manager Lite

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-122222?: CVE-2026-122222 is a medium-severity vulnerability in Mbis Permalink Manager Lite, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-11-06.
How severe is CVE-2026-122222?: Medium severity. CVSS v3 base score is 6.4 out of 10.