Cyber Resilience

CVE-2026-22345

HighRCE

Published: 20 February 2026

Published
20 February 2026
Modified
15 April 2026
KEV Added
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Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0034 26.2th percentile
Risk Priority 55 floored blend · peak EPSS

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 26.2th 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).

Deeper analysis

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.

OWASP Top 10 for Web (2025)

A08:2025 Software or Data Integrity Failures

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-502

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
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).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-1971Shared CWE-502
CVE-2025-29310Shared CWE-502
CVE-2026-47161Shared CWE-502
CVE-2024-13742Shared CWE-502
CVE-2025-2485Shared CWE-502
CVE-2026-42778Shared CWE-502
CVE-2026-29782Shared CWE-502
CVE-2026-27084Shared CWE-502
CVE-2025-68047Shared CWE-502
CVE-2025-25940Shared CWE-502

Affected Assets

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

SI-2 Flaw Remediation good match
prevent

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 Information Input Validation good match
prevent

SI-10 enforces validation of untrusted information inputs to block malicious serialized objects that enable object injection in the vulnerable WordPress plugin.

RA-5 Vulnerability Monitoring and Scanning good match
detectrespond

RA-5 mandates vulnerability scanning to detect the presence of CVE-2026-22345 in the system, enabling prioritized remediation.

References