CVE-2026-81155 Robo Gallery CVE debrief

Who should care

Defenders responsible for WordPress sites using the Robo Gallery plugin, particularly those with users having the Author role and above, should assess exposure and prioritize updating the plugin.

Why it matters

Defenders should prioritize verifying and updating the Robo Gallery WordPress plugin to prevent Stored Cross-Site Scripting attacks, and assess exposure for users with the Author role and above.

• Potential for Stored Cross-Site Scripting attacks on WordPress sites
• Exposure of users with the Author role and above
• Need for verification and updates to the Robo Gallery plugin

Technical summary

The Robo Gallery WordPress plugin before 5.2.6 does not sanitise and escape a gallery setting before outputting it on a frontend page, allowing users with the Author role and above to perform Stored Cross-Site Scripting attacks. This vulnerability has significant implications for WordPress sites using the affected plugin, particularly those with users having elevated roles, as it can lead to Stored Cross-Site Scripting attacks that execute in the browser of any visitor viewing a gallery, including administrators. Defenders should prioritize verifying and updating the Robo Gallery WordPress plugin to prevent such attacks.

Defensive priority

Defenders should prioritize verifying and updating the Robo Gallery WordPress plugin to version 5.2.6 or later, and assess exposure for users with the Author role and above.

Recommended defensive actions

• Verify and update the Robo Gallery WordPress plugin to version 5.2.6 or later
• Assess exposure for users with the Author role and above
• Monitor for suspicious activity on the WordPress site
• 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 record and NVD entry provide limited information about the vulnerability, with the primary source being the WPScan reference. The vulnerability has been identified in the Robo Gallery WordPress plugin before version 5.2.6, which does not properly sanitise and escape a gallery setting. Defenders should verify the plugin version and assess exposure for users with the Author role and above.

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.