What is CVE-2026-121976?

CVE-2026-121976 is a medium-severity vulnerability in Wpchill Modula Image Gallery – Photo Grid & Video, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-11-07.

How severe is CVE-2026-121976?

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

XSS in Wpchill Modula Image Gallery – Photo Grid & Video

CVE-2026-121976

The Modula plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'items' parameter in versions up to, and including, 3.0.17 This is due to insufficient input sanitization of the per-image 'link' field in the save_merged_items() REST handler and Images\Adapter::normalize_item_row(), which preserves unknown keys verbatim, combined with output escaping in Modula_Helper::generate_attributes() that applies only esc_attr() to the resulting anchor href and does not strip the 'javascript:' URL scheme. 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 and clicks the gallery tile.

Vulnerability class: XSS (Cross-Site Scripting)

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

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

Wpchill Modula Image Gallery – Photo Grid & Video

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-121976?: CVE-2026-121976 is a medium-severity vulnerability in Wpchill Modula Image Gallery – Photo Grid & Video, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-11-07.
How severe is CVE-2026-121976?: Medium severity. CVSS v3 base score is 6.4 out of 10.