CVE-2026-22345
Published: 20 February 2026
Summary
CVE-2026-22345 is a high-severity Deserialization of Untrusted Data (CWE-502) vulnerability. Its CVSS base score is 8.8 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 21.6th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified are NIST 800-53 RA-5 (Vulnerability Monitoring and Scanning) and SI-10 (Information Input Validation).
Threat & Defense at a Glance
Threat & Defense Details
Mitigating Controls (NIST 800-53 r5)AI
SI-2 requires timely identification, reporting, and correction of flaws like the deserialization vulnerability in CVE-2026-22345, preventing exploitation through patching the affected plugin.
SI-10 enforces validation of untrusted information inputs to block malicious serialized objects that enable object injection in the vulnerable WordPress plugin.
RA-5 mandates vulnerability scanning to detect the presence of CVE-2026-22345 in the system, enabling prioritized remediation.
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Deserialization/object injection in public-facing WordPress plugin directly enables remote code execution by authenticated attackers (T1190); resulting arbitrary code execution maps to command/scripting interpreter usage (T1059).
NVD Description
Deserialization of Untrusted Data vulnerability in A WP Life Image Gallery – Lightbox Gallery, Responsive Photo Gallery, Masonry Gallery new-image-gallery allows Object Injection.This issue affects Image Gallery – Lightbox Gallery, Responsive Photo Gallery, Masonry Gallery: from n/a through <= 1.6.0.
Deeper analysisAI
CVE-2026-22345 is a Deserialization of Untrusted Data vulnerability (CWE-502) in the WordPress plugin Image Gallery – Lightbox Gallery, Responsive Photo Gallery, Masonry Gallery, also known as A WP Life Image Gallery – Lightbox Gallery, Responsive Photo Gallery, Masonry Gallery under the new-image-gallery slug. The flaw enables Object Injection and affects all versions from n/a through 1.6.0. Published on 2026-02-20, it carries a CVSS v3.1 base score of 8.8 (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
A low-privileged authenticated attacker (PR:L) can exploit this over the network (AV:N) with low attack complexity (AC:L) and no user interaction (UI:N), without changing scope (S:U). Successful exploitation could result in high impacts on confidentiality, integrity, and availability (C:H/I:H/A:H), such as arbitrary code execution or data manipulation via crafted serialized objects.
Mitigation details are available in the Patchstack advisory at https://patchstack.com/database/Wordpress/Plugin/new-image-gallery/vulnerability/wordpress-image-gallery-lightbox-gallery-responsive-photo-gallery-masonry-gallery-plugin-1-6-0-php-object-injection-vulnerability?_s_id=cve.
Details
- CWE(s)