CVE-2026-7850 WP Magnific Popup CVE debrief

Who should care

Users of WP Magnific Popup WordPress plugin through 1.0 should be aware of this vulnerability and take steps to mitigate it. This includes administrators and security teams responsible for maintaining WordPress installations with the WP Magnific Popup plugin. The vulnerability allows authenticated attackers with Author-level access or above to perform Stored Cross-Site Scripting attacks against any visiting user.

Technical summary

The vulnerability exists in the WP Magnific Popup WordPress plugin through 1.0. The plugin does not properly escape user-controlled link URLs before injecting them into the DOM when displaying image load error messages. This allows authenticated attackers with Author-level access or above to perform Stored Cross-Site Scripting attacks against any visiting user. The vulnerability has a CVSS score of 5.9 and a severity of MEDIUM.

Defensive priority

Medium

Recommended defensive actions

• Update to a patched version if available
• Implement Content Security Policy (CSP)
• Monitor for suspicious activity
• 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 was published on 2026-06-17T13:21:06.357Z and has not been modified since then. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The WP Magnific Popup WordPress plugin through 1.0 does not properly escape user-controlled link URLs before injecting them into the DOM when displaying image load error messages.

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.