CVE-2026-92422 Meow Gallery CVE debrief

Who should care

Defenders responsible for WordPress installations with the Meow Gallery plugin should assess exposure and prioritize updating to version 5.5.5 or later. This includes administrators, security teams, and IT personnel who manage WordPress environments and are responsible for ensuring the security and integrity of the systems and data they protect.

Why it matters

Defenders should prioritize verifying the Meow Gallery plugin version and ensuring it is updated to 5.5.5 or later to prevent arbitrary shortcode execution and potential disclosure of non-public gallery content.

• Unauthenticated users can execute arbitrary registered shortcodes
• Non-public gallery content can be disclosed

Technical summary

The Meow Gallery WordPress plugin before 5.5.5 does not properly sanitize a user-supplied value before concatenating it into a shortcode string that it passes to the WordPress shortcode parser on a publicly reachable endpoint, allowing unauthenticated users to execute arbitrary registered shortcodes. This vulnerability can lead to the disclosure of non-public gallery content and potentially other security issues depending on the shortcodes that can be executed. Defenders should prioritize verifying the Meow Gallery plugin version and ensuring it is updated to 5.5.5 or later to prevent arbitrary shortcode execution.

Defensive priority

Defenders should prioritize verifying the Meow Gallery plugin version and ensuring it is updated to 5.5.5 or later to prevent arbitrary shortcode execution.

Recommended defensive actions

• Verify the Meow Gallery plugin version and update to 5.5.5 or later
• Restrict access to the publicly reachable endpoint
• Monitor for suspicious shortcode execution
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE description and source reference indicate that the Meow Gallery WordPress plugin is vulnerable to arbitrary shortcode execution, but details on exploitation are limited. The plugin's failure to properly sanitize user-supplied input before passing it to the WordPress shortcode parser on a publicly reachable endpoint creates a risk of arbitrary shortcode execution and potential disclosure of non-public gallery content.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.