---
id: "CVE-2026-121976"
page: "https://infrastack.ai/live/CVE-2026-121976"
kind: "vulnerability"
aliases: ["CVE-2026-121976"]
title: "Modula gallery plugin for WordPress: stored script injection via image links"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["modula", "package", "self-hosted", "wordpress"]
not_affected_if: ["no-untrusted-authors", "plugin-not-installed"]
published_at: "2026-11-07T12:17:45+00:00"
first_seen_at: "2026-11-07T12:47:09+00:00"
updated_at: "2026-11-07T12:49:02+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-121976", "first_seen_at": "2026-11-07T12:47:09+00:00"}]
exploit_sources: []
---

# Modula gallery plugin for WordPress: stored script injection via image links

Link for people: https://infrastack.ai/live/CVE-2026-121976 (this .md is for agents)

The Modula plugin for WordPress up to and including 3.0.17 fails to sanitize the per-image link field, so a javascript: URL can be saved into a gallery. When a visitor clicks the gallery tile on the injected page, the script runs in their browser.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Modula plugin version in the WordPress admin plugin list; versions `3.0.17` and below are in the stated range.
- Review gallery image link fields for values beginning with `javascript:`.

## Timeline

- 2026-11-07T12:47:09+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-121976

## From the sources

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.

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