CVE-2026-4379

MediumCVSS 6.4/10Last modified Jul 25, 2026

Description

The LightPress Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `group` attribute in the `[gallery]` shortcode in all versions up to, and including, 2.3.4. This is due to the plugin modifying gallery shortcode output to include the `group` attribute value without proper escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Metrics

CVSS 3.1 6.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

VendorProductVersions
firelightwpLightPress Lightbox<= 2.3.4

References

Timeline

Published
Apr 8, 2026
Last modified
Jul 25, 2026
NVD status
Deferred

Related CVEs from 2026

CVE-2026-437909.1The issue was addressed with improved memory handling. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A CVE-2026-437916.5A validation issue was addressed with improved input sanitization. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS TaCVE-2026-437926.5An authorization issue was addressed with improved state management. This issue is fixed in Safari 26.6, macOS Tahoe 26.6. An app may be ablCVE-2026-437939.8An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS SCVE-2026-437948.8A memory corruption issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10,CVE-2026-437954.3The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and CVE-2026-437965.5This issue was addressed with improved data protection. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macCVE-2026-437975.5This issue was addressed with improved checks. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Tahoe CVE-2026-437989.8A single crafted SSH message gives an unauthenticated network attacker an out-of-bounds stack write of attacker-controlled length and contenCVE-2026-437999.8A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPCVE-2026-438005.5An information disclosure issue was addressed by removing the vulnerable code. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26CVE-2026-438015.5This issue was addressed with improved checks. This issue is fixed in iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6 and iPadOS 26.6, macOS Sequoi