---
id: "CVE-2026-84919"
kind: "vulnerability"
aliases: ["CVE-2026-84919"]
title: "Drupal PhotoSwipe gallery module: stored XSS through unsanitized input"
severity: "medium"
cvss: 4.6
epss: 0.00162
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["cms", "drupal", "package", "php"]
not_affected_if: ["module-not-installed", "trusted-content-only"]
published_at: "2026-10-22T02:17:02+00:00"
first_seen_at: "2026-10-23T21:57:30+00:00"
updated_at: "2026-10-25T04:35:30+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84919", "first_seen_at": "2026-10-23T21:57:30+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-84919", "first_seen_at": "2026-10-24T07:15:52+00:00"}]
---

# Drupal PhotoSwipe gallery module: stored XSS through unsanitized input

The Drupal PhotoSwipe responsive image gallery module fails to neutralize input when generating web pages, enabling stored cross-site scripting. An attacker who can store content that the gallery renders can run JavaScript in other visitors' browsers.

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

## How to check

- Check the installed PhotoSwipe module version with `drush pm:list --filter=photoswipe` or in the Drupal admin under Extend
- Confirm whether the module is enabled on the site

## Fix

- Upgrade the Drupal PhotoSwipe module to a version later than `5.0.9`
- Until upgraded, restrict who can enter content into gallery fields

## Timeline

- 2026-10-23T21:57:30+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84919
- 2026-10-24T07:15:52+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-84919

## From the sources

Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image Gallery allows Stored XSS. This issue affects PhotoSwipe - Responsive JavaScript Modal Image Gallery versions: from 0.0.0 to 5.0.9.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_