CVE-2026-16645

PhotoSwipe - Responsive JavaScript Modal Image Gallery - Moderately critical - Access bypass - SA-CONTRIB-2026-088

9.1 CriticalFix available

Missing Authorization vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image Gallery allows Forceful Browsing. This issue affects PhotoSwipe - Responsive JavaScript Modal Image Gallery versions: from 0.0.0 to 3.2.0.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.40%Up 0.3 points since Aug 26, 2026

What each source reports

CVE List Score used 9.1

PhotoSwipe - Responsive JavaScript Modal Image Gallery - Moderately critical - Access bypass - SA-CONTRIB-2026-088

Record: CVE-2026-16645
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-862
Updated: 2026-11-02

EUVDEUVD-2026-66202 9.1

Record: EUVD-2026-66202
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-wq7x-7x4j-792v 9.1

Missing Authorization vulnerability in Drupal PhotoSwipe - Responsive JavaScript Modal Image...

Record: GHSA-wq7x-7x4j-792v
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-862
Updated: 2026-11-02

NVD 9.1

Record: CVE-2026-16645
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-862
Updated: 2026-11-02

OSV 9.1

PhotoSwipe - Responsive JavaScript Modal Image Gallery - Moderately critical - Access bypass - SA-CONTRIB-2026-088

Record: CVE-2026-16645
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness: CWE-862
Updated: 2026-11-02

OSVDRUPAL-CONTRIB-2026-088 No score

The Photoswipe Drupal module provides integration for the widely used PhotoSwipe lightbox library to display / zoom images in lightbox galleries using the provided image formatters.

The module didn't sufficiently check access permissions, when viewing an image using the photoswipe image gallery display formatter, in versions < 3.0.4 (Drupal 8) or < 3.2.0 (Drupal 9 / Drupal 10).

This vulnerability is mitigated by the fact that it only affects sites limiting access to the images shown in photoswipe (the most common use case for photoswipe lightboxes public images).

Record: DRUPAL-CONTRIB-2026-088
Updated: 2026-11-02

Affected products

drupal photoswipe - responsive javascript modal image gallery

Affected packages

Affected packages
Package	Affected	Fixed
`drupal/photoswipe` Packagist:https://packages.drupal.org/8	before 3.2.0	3.2.0

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-16645 is a critical vulnerability (CVSS 9.1) in Drupal Photoswipe - Responsive Javascript Modal Image Gallery, published July 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 34th percentile. Fixed in drupal/photoswipe 3.2.0.