CVE-2026-110290 ajay CVE debrief

Who should care

Defenders responsible for WordPress installations using the WebberZone Top 10 — Popular Posts plugin, particularly those with contributor-level access and above, should assess exposure and prioritize verification and updates.

Why it matters

CVE-2026-110290 is a Stored Cross-Site Scripting vulnerability in the WebberZone Top 10 — Popular Posts plugin for WordPress. Defenders should prioritize verifying and updating the plugin, assessing exposure, and monitoring for potential exploitation attempts. The vulnerability allows authenticated attackers to inject arbitrary web scripts, which execute when users access injected pages. Verification and updates are crucial to prevent potential exploitation.

• Authenticated attackers with contributor-level access and above can inject arbitrary web scripts
• Injected scripts execute whenever a user accesses an injected page
• Defenders must verify and update the plugin to a fixed version
• Exposure requires assessment in environments using the vulnerable plugin

Technical summary

The WebberZone Top 10 — Popular Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'other_attributes (parsed to inject instance_id) + undeclared is_widget' parameter in all versions up to, and including, 4.5.2. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Defensive priority

Defenders should prioritize verifying and updating the WebberZone Top 10 — Popular Posts plugin to a fixed version, assessing exposure in their environments, and monitoring for potential exploitation attempts.

Recommended defensive actions

• Verify and update the WebberZone Top 10 — Popular Posts plugin to a fixed version
• Assess exposure in environments using the vulnerable plugin
• Monitor for potential exploitation attempts
• 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 details on the vulnerability, including its description, CVSS score, and affected versions. However, the corpus does not establish versions beyond 4.5.2, exploitation, impact, or remediation, which require verification from the supplied official sources.

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.