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Classified Listing - Broken Access Control (CVE-2026-16276)

CVE-2026-16276

Vulnerability CVE-2026-16276 PLUGIN classified-listing LOW

The Classified Listing WordPress plugin before 5.4.4 does not perform a capability check on an AJAX action that returns aggregated store revenue totals, allowing users with contributor-level access and above to read daily revenue figures normally restricted to administrators and report managers.

CVE-2026-16276

LOW CVSS 2.7 Published 2026-08-03 Updated 2026-08-26
AI Risk Low (24/100) Active Exploit: No strong signal Published Exploit: No public exploit references Priority: P5 Monitor
Severity Band LOW
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Affected Components 1
Reference Links 1
AI Risk Engine Low (24/100)
Exploitability Low
Active Exploitation No strong signal
Published Exploit Status No public exploit references

Threat Timeline

  1. 2026-08-03 CVE published and first recorded in the threat feed.
  2. 2026-08-26 Record updated with latest vulnerability metadata.
  3. 2026-08-06 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated 29 days ago

AI enriched 29 days ago (2026-08-06 22:30 UTC)

Technical Summary

The Classified Listing WordPress plugin before 5.4.4 does not perform a capability check on an AJAX action that returns aggregated store revenue totals, allowing users with contributor-level access and above to read daily revenue figures normally restricted to administrators and report managers.

Potential Impact

Severity is LOW (CVSS 2.7). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Low based on severity and technical exposure profile.

Primary risk drivers: severity and technical exposure profile

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 24/100 (Low, Low) with priority P5 Monitor. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Classified Listing PLUGIN · classified-listing Affected: < 5.4.4 Fixed in: 5.4.4

Related Vulnerabilities

Browse All Threats

Newest linked vulnerabilities to keep visitors exploring adjacent CVE coverage.

Classified Listing - Security Vulnerability (CVE-2026-16281) CVE-2026-16281 Published 2026-09-04 New Classified Listing - Authentication Bypass (CVE-2026-15985) CVE-2026-15985 Published 2026-08-26 New Classified Listing - Security Vulnerability (CVE-2026-16274) CVE-2026-16274 Published 2026-08-03 Classified Listing - Broken Access Control (CVE-2026-14183) CVE-2026-14183 Published 2026-07-21 Classified Listing - Broken Access Control (CVE-2026-57355) CVE-2026-57355 Published 2026-07-02 Classified Listing - Cross-Site Scripting (XSS) (CVE-2026-57344) CVE-2026-57344 Published 2026-07-02

References

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Classified Listing to 5.4.4 or later.

That is the complete fix. Everything below is what protects you in the meantime.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

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Not sure if you are affected?

Scan your site to see whether it runs Classified Listing, and at which version.

Free, no installation, no account. It reads what your site already publishes, then tells you which plugins carry known vulnerabilities and what to do about each one.

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Am I affected by this vulnerability?

You are affected if your site runs Classified Listing. Versions below 5.4.4 are vulnerable; that release and later are not.

How do I fix it?

Update Classified Listing to version 5.4.4 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

What can an attacker actually do?

This is a Broken Access Control flaw. An attacker who exploits it can reach actions or data that should have been restricted to someone else.

WordPress security that blocks attacks before they land.

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